diff --git a/proof-of-work/app/api/programs/[id]/days/[dayId]/start/route.ts b/proof-of-work/app/api/programs/[id]/days/[dayId]/start/route.ts
new file mode 100644
index 0000000..dccaf9b
--- /dev/null
+++ b/proof-of-work/app/api/programs/[id]/days/[dayId]/start/route.ts
@@ -0,0 +1,105 @@
+import { NextRequest, NextResponse } from "next/server";
+import { z } from "zod";
+import { getCurrentUser } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+
+/**
+ * POST /api/programs/[id]/days/[dayId]/start
+ *
+ * Creates a new Workout for the actor pre-populated with the
+ * ProgramDay's exercise list — one SetLog per planned set, with
+ * empty reps/weight that the user fills in as they actually log
+ * the session. Stamps `Workout.programDayId` for adherence
+ * tracking.
+ *
+ * Body (optional): { date?: string (ISO) }
+ *   - date defaults to today
+ */
+
+const bodySchema = z.object({
+  date: z.string().optional(),
+});
+
+export async function POST(
+  request: NextRequest,
+  { params }: { params: { id: string; dayId: string } },
+) {
+  try {
+    const user = await getCurrentUser();
+    if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    let body: unknown = {};
+    try {
+      body = await request.json();
+    } catch {
+      // Empty body is fine.
+    }
+    const parsed = bodySchema.safeParse(body);
+    const dateStr = parsed.success ? parsed.data.date : undefined;
+
+    const day = await prisma.programDay.findFirst({
+      where: {
+        id: params.dayId,
+        week: { programId: params.id, program: { userId: user.id } },
+      },
+      include: {
+        exercises: {
+          orderBy: { order: "asc" },
+          include: { exercise: true },
+        },
+        week: { include: { program: { select: { name: true } } } },
+      },
+    });
+    if (!day) {
+      return NextResponse.json(
+        { error: "Program day not found" },
+        { status: 404 },
+      );
+    }
+
+    // Build SetLog rows: for each planned exercise, pre-create N
+    // empty sets where N = exercise.sets ?? 1. The user fills in
+    // reps/weight when they actually do them.
+    const setLogsCreate: {
+      exerciseId: string;
+      setNumber: number;
+      weightUnit: string;
+    }[] = [];
+    for (const ex of day.exercises) {
+      const setCount = ex.sets ?? 1;
+      for (let n = 1; n <= setCount; n++) {
+        setLogsCreate.push({
+          exerciseId: ex.exerciseId,
+          setNumber: n,
+          weightUnit: ex.exercise.defaultWeightUnit ?? "lbs",
+        });
+      }
+    }
+
+    const workoutDate = dateStr ? new Date(dateStr) : new Date();
+    const workoutName =
+      day.name ??
+      `${day.week.program.name} · Week ${day.week.weekNumber} Day ${day.dayOfWeek}`;
+
+    const workout = await prisma.workout.create({
+      data: {
+        userId: user.id,
+        date: workoutDate,
+        name: workoutName,
+        programDayId: day.id,
+        setLogs: setLogsCreate.length > 0 ? { create: setLogsCreate } : undefined,
+      },
+      include: {
+        setLogs: {
+          include: { exercise: true },
+          orderBy: { setNumber: "asc" },
+        },
+      },
+    });
+
+    return NextResponse.json(workout, { status: 201 });
+  } catch (err) {
+    console.error("POST /api/programs/[id]/days/[dayId]/start error:", err);
+    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
+  }
+}
diff --git a/proof-of-work/app/api/programs/[id]/route.ts b/proof-of-work/app/api/programs/[id]/route.ts
new file mode 100644
index 0000000..b33475b
--- /dev/null
+++ b/proof-of-work/app/api/programs/[id]/route.ts
@@ -0,0 +1,204 @@
+import { NextRequest, NextResponse } from "next/server";
+import { z } from "zod";
+import { Prisma } from "@prisma/client";
+import { getCurrentUser } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { getProgramById } from "@/lib/db/programs";
+
+/**
+ * GET    /api/programs/[id]   — full program tree (weeks + days + exercises).
+ * PATCH  /api/programs/[id]   — update metadata (name/description/type/
+ *                                 durationWeeks/startDate/isActive) AND/OR
+ *                                 replace the entire weeks tree if provided.
+ *                                 Replace-tree is the simpler mental model
+ *                                 for the UI editor + the AI apply flow:
+ *                                 same payload shape as POST /api/programs.
+ * DELETE /api/programs/[id]   — cascading delete (weeks/days/exercises go
+ *                                 via Prisma onDelete: Cascade).
+ */
+
+const exerciseInput = z.object({
+  exerciseId: z.string().min(1),
+  order: z.number().int().nonnegative(),
+  sets: z.number().int().positive().optional().nullable(),
+  repsMin: z.number().int().positive().optional().nullable(),
+  repsMax: z.number().int().positive().optional().nullable(),
+  rpe: z.number().int().min(1).max(10).optional().nullable(),
+  restSeconds: z.number().int().nonnegative().optional().nullable(),
+  notes: z.string().optional().nullable(),
+});
+const dayInput = z.object({
+  dayOfWeek: z.number().int().min(0).max(6),
+  name: z.string().optional().nullable(),
+  description: z.string().optional().nullable(),
+  exercises: z.array(exerciseInput),
+});
+const weekInput = z.object({
+  weekNumber: z.number().int().positive(),
+  phase: z.string().optional().nullable(),
+  description: z.string().optional().nullable(),
+  days: z.array(dayInput),
+});
+
+const patchSchema = z.object({
+  name: z.string().min(1).optional(),
+  description: z.string().optional().nullable(),
+  type: z.string().min(1).optional(),
+  durationWeeks: z.number().int().positive().optional(),
+  startDate: z.string().optional(),
+  isActive: z.boolean().optional(),
+  /** When provided, REPLACES the entire weeks tree. */
+  weeks: z.array(weekInput).optional(),
+});
+
+export async function GET(
+  _request: NextRequest,
+  { params }: { params: { id: string } },
+) {
+  const user = await getCurrentUser();
+  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  const program = await getProgramById(user.id, params.id);
+  if (!program) {
+    return NextResponse.json({ error: "Program not found" }, { status: 404 });
+  }
+  return NextResponse.json(program);
+}
+
+export async function PATCH(
+  request: NextRequest,
+  { params }: { params: { id: string } },
+) {
+  try {
+    const user = await getCurrentUser();
+    if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    const existing = await prisma.program.findFirst({
+      where: { id: params.id, userId: user.id },
+      select: { id: true },
+    });
+    if (!existing) {
+      return NextResponse.json({ error: "Program not found" }, { status: 404 });
+    }
+
+    const body = await request.json();
+    const validated = patchSchema.parse(body);
+
+    // If replacing the tree, verify exercise ownership.
+    if (validated.weeks) {
+      const allExerciseIds = new Set<string>();
+      for (const w of validated.weeks)
+        for (const d of w.days)
+          for (const ex of d.exercises) allExerciseIds.add(ex.exerciseId);
+      if (allExerciseIds.size > 0) {
+        const owned = await prisma.exercise.findMany({
+          where: { userId: user.id, id: { in: Array.from(allExerciseIds) } },
+          select: { id: true },
+        });
+        const ownedIds = new Set(owned.map((e) => e.id));
+        const bad = Array.from(allExerciseIds).filter((id) => !ownedIds.has(id));
+        if (bad.length > 0) {
+          return NextResponse.json(
+            { error: "Some exerciseIds don't exist in your library", details: bad },
+            { status: 400 },
+          );
+        }
+      }
+    }
+
+    const programData: Prisma.ProgramUpdateInput = {};
+    if (validated.name !== undefined) programData.name = validated.name;
+    if (validated.description !== undefined)
+      programData.description = validated.description;
+    if (validated.type !== undefined) programData.type = validated.type;
+    if (validated.durationWeeks !== undefined)
+      programData.durationWeeks = validated.durationWeeks;
+    if (validated.startDate !== undefined)
+      programData.startDate = new Date(validated.startDate);
+    if (validated.isActive !== undefined) programData.isActive = validated.isActive;
+
+    await prisma.$transaction(async (tx) => {
+      if (Object.keys(programData).length > 0) {
+        await tx.program.update({ where: { id: params.id }, data: programData });
+      }
+
+      if (validated.weeks) {
+        // Wipe and rebuild the entire tree. Cascading delete on
+        // ProgramWeek removes ProgramDay + ProgramExercise; Workouts
+        // referencing those days have their programDayId set to NULL
+        // by the FK ON DELETE SET NULL clause we declared in the
+        // schema, so adherence references aren't catastrophic.
+        await tx.programWeek.deleteMany({ where: { programId: params.id } });
+        for (const w of validated.weeks) {
+          const week = await tx.programWeek.create({
+            data: {
+              programId: params.id,
+              weekNumber: w.weekNumber,
+              phase: w.phase ?? null,
+              description: w.description ?? null,
+            },
+          });
+          for (const d of w.days) {
+            const day = await tx.programDay.create({
+              data: {
+                weekId: week.id,
+                dayOfWeek: d.dayOfWeek,
+                name: d.name ?? null,
+                description: d.description ?? null,
+              },
+            });
+            if (d.exercises.length > 0) {
+              await tx.programExercise.createMany({
+                data: d.exercises.map((ex) => ({
+                  dayId: day.id,
+                  exerciseId: ex.exerciseId,
+                  order: ex.order,
+                  sets: ex.sets ?? null,
+                  repsMin: ex.repsMin ?? null,
+                  repsMax: ex.repsMax ?? null,
+                  rpe: ex.rpe ?? null,
+                  restSeconds: ex.restSeconds ?? null,
+                  notes: ex.notes ?? null,
+                })) as Prisma.ProgramExerciseCreateManyInput[],
+              });
+            }
+          }
+        }
+      }
+    });
+
+    const updated = await getProgramById(user.id, params.id);
+    return NextResponse.json(updated);
+  } catch (err) {
+    if (err instanceof z.ZodError) {
+      return NextResponse.json(
+        { error: "Invalid patch payload", details: err.errors },
+        { status: 400 },
+      );
+    }
+    console.error("PATCH /api/programs/[id] error:", err);
+    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
+  }
+}
+
+export async function DELETE(
+  _request: NextRequest,
+  { params }: { params: { id: string } },
+) {
+  try {
+    const user = await getCurrentUser();
+    if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    const existing = await prisma.program.findFirst({
+      where: { id: params.id, userId: user.id },
+      select: { id: true },
+    });
+    if (!existing) {
+      return NextResponse.json({ error: "Program not found" }, { status: 404 });
+    }
+    await prisma.program.delete({ where: { id: params.id } });
+    return NextResponse.json({ success: true });
+  } catch (err) {
+    console.error("DELETE /api/programs/[id] error:", err);
+    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
+  }
+}
diff --git a/proof-of-work/app/api/programs/route.ts b/proof-of-work/app/api/programs/route.ts
new file mode 100644
index 0000000..6b1783e
--- /dev/null
+++ b/proof-of-work/app/api/programs/route.ts
@@ -0,0 +1,149 @@
+import { NextRequest, NextResponse } from "next/server";
+import { z } from "zod";
+import { Prisma } from "@prisma/client";
+import { getCurrentUser } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+import { getPrograms } from "@/lib/db/programs";
+
+/**
+ * Programs CRUD.
+ *
+ * Programs are multi-week training plans. The full structure is
+ * Program -> ProgramWeek -> ProgramDay -> ProgramExercise. POST
+ * accepts the entire tree in a single payload and writes it in
+ * one transaction (the v1.1.0:2 AI flow uses the same shape).
+ */
+
+const exerciseInput = z.object({
+  exerciseId: z.string().min(1),
+  order: z.number().int().nonnegative(),
+  sets: z.number().int().positive().optional().nullable(),
+  repsMin: z.number().int().positive().optional().nullable(),
+  repsMax: z.number().int().positive().optional().nullable(),
+  rpe: z.number().int().min(1).max(10).optional().nullable(),
+  restSeconds: z.number().int().nonnegative().optional().nullable(),
+  notes: z.string().optional().nullable(),
+});
+
+const dayInput = z.object({
+  dayOfWeek: z.number().int().min(0).max(6),
+  name: z.string().optional().nullable(),
+  description: z.string().optional().nullable(),
+  exercises: z.array(exerciseInput),
+});
+
+const weekInput = z.object({
+  weekNumber: z.number().int().positive(),
+  phase: z.string().optional().nullable(),
+  description: z.string().optional().nullable(),
+  days: z.array(dayInput),
+});
+
+const createProgramSchema = z.object({
+  name: z.string().min(1),
+  description: z.string().optional().nullable(),
+  type: z.string().min(1),
+  durationWeeks: z.number().int().positive(),
+  startDate: z.string(), // ISO
+  isActive: z.boolean().optional().default(false),
+  weeks: z.array(weekInput).default([]),
+});
+
+export async function GET() {
+  const user = await getCurrentUser();
+  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+  const programs = await getPrograms(user.id);
+  return NextResponse.json(programs);
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const user = await getCurrentUser();
+    if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    const body = await request.json();
+    const validated = createProgramSchema.parse(body);
+
+    // Verify any referenced exerciseIds belong to this user.
+    const allExerciseIds = new Set<string>();
+    for (const w of validated.weeks)
+      for (const d of w.days)
+        for (const ex of d.exercises) allExerciseIds.add(ex.exerciseId);
+
+    if (allExerciseIds.size > 0) {
+      const owned = await prisma.exercise.findMany({
+        where: { userId: user.id, id: { in: Array.from(allExerciseIds) } },
+        select: { id: true },
+      });
+      const ownedIds = new Set(owned.map((e) => e.id));
+      const bad = Array.from(allExerciseIds).filter((id) => !ownedIds.has(id));
+      if (bad.length > 0) {
+        return NextResponse.json(
+          { error: "Some exerciseIds don't exist in your library", details: bad },
+          { status: 400 },
+        );
+      }
+    }
+
+    const program = await prisma.$transaction(async (tx) => {
+      const created = await tx.program.create({
+        data: {
+          userId: user.id,
+          name: validated.name,
+          description: validated.description ?? null,
+          type: validated.type,
+          durationWeeks: validated.durationWeeks,
+          startDate: new Date(validated.startDate),
+          isActive: validated.isActive,
+        },
+      });
+      for (const w of validated.weeks) {
+        const week = await tx.programWeek.create({
+          data: {
+            programId: created.id,
+            weekNumber: w.weekNumber,
+            phase: w.phase ?? null,
+            description: w.description ?? null,
+          },
+        });
+        for (const d of w.days) {
+          const day = await tx.programDay.create({
+            data: {
+              weekId: week.id,
+              dayOfWeek: d.dayOfWeek,
+              name: d.name ?? null,
+              description: d.description ?? null,
+            },
+          });
+          if (d.exercises.length > 0) {
+            await tx.programExercise.createMany({
+              data: d.exercises.map((ex) => ({
+                dayId: day.id,
+                exerciseId: ex.exerciseId,
+                order: ex.order,
+                sets: ex.sets ?? null,
+                repsMin: ex.repsMin ?? null,
+                repsMax: ex.repsMax ?? null,
+                rpe: ex.rpe ?? null,
+                restSeconds: ex.restSeconds ?? null,
+                notes: ex.notes ?? null,
+              })) as Prisma.ProgramExerciseCreateManyInput[],
+            });
+          }
+        }
+      }
+      return created;
+    });
+
+    return NextResponse.json(program, { status: 201 });
+  } catch (err) {
+    if (err instanceof z.ZodError) {
+      return NextResponse.json(
+        { error: "Invalid program payload", details: err.errors },
+        { status: 400 },
+      );
+    }
+    console.error("POST /api/programs error:", err);
+    return NextResponse.json({ error: "Internal server error" }, { status: 500 });
+  }
+}
diff --git a/proof-of-work/app/main/navigation.tsx b/proof-of-work/app/main/navigation.tsx
index 0d09801..2801042 100644
--- a/proof-of-work/app/main/navigation.tsx
+++ b/proof-of-work/app/main/navigation.tsx
@@ -5,6 +5,7 @@ import {
   LayoutDashboard,
   Dumbbell,
   ListChecks,
+  Calendar,
   Settings,
   LogOut,
 } from 'lucide-react';
@@ -17,6 +18,7 @@ interface NavigationProps {
 const navLinks = [
   { href: '/main/dashboard', label: 'Dashboard', icon: LayoutDashboard },
   { href: '/main/workouts', label: 'Workouts', icon: Dumbbell },
+  { href: '/main/programs', label: 'Programs', icon: Calendar },
   { href: '/main/exercises', label: 'Exercises', icon: ListChecks },
   { href: '/main/settings', label: 'Settings', icon: Settings },
 ];
diff --git a/proof-of-work/app/main/programs/[id]/page.tsx b/proof-of-work/app/main/programs/[id]/page.tsx
new file mode 100644
index 0000000..99b1ac4
--- /dev/null
+++ b/proof-of-work/app/main/programs/[id]/page.tsx
@@ -0,0 +1,135 @@
+import { notFound, redirect } from 'next/navigation';
+import Link from 'next/link';
+import { ChevronLeft } from 'lucide-react';
+import { getCurrentUser } from '@/lib/auth';
+import { prisma } from '@/lib/prisma';
+import { getProgramById, computeTodaysSessionForProgram } from '@/lib/db/programs';
+import ProgramEditor, {
+  type DraftProgram,
+} from '@/components/programs/ProgramEditor';
+import ProgramActions from '@/components/programs/ProgramActions';
+import StartSessionButton from '@/components/programs/StartSessionButton';
+
+export const dynamic = 'force-dynamic';
+
+const DAY_LABELS = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+
+export default async function ProgramDetailPage({
+  params,
+}: {
+  params: { id: string };
+}) {
+  const user = await getCurrentUser();
+  if (!user) redirect('/auth/login');
+
+  const program = await getProgramById(user.id, params.id);
+  if (!program) notFound();
+
+  const exercises = await prisma.exercise.findMany({
+    where: { userId: user.id },
+    select: { id: true, name: true, type: true },
+    orderBy: [{ type: 'asc' }, { name: 'asc' }],
+  });
+
+  const todaysSession = program.isActive
+    ? computeTodaysSessionForProgram(program, new Date())
+    : null;
+
+  const draft: DraftProgram = {
+    name: program.name,
+    description: program.description,
+    type: program.type,
+    durationWeeks: program.durationWeeks,
+    startDate: program.startDate.toISOString().slice(0, 10),
+    isActive: program.isActive,
+    weeks: program.weeks.map((w) => ({
+      weekNumber: w.weekNumber,
+      phase: w.phase,
+      description: w.description,
+      days: w.days.map((d) => ({
+        dayOfWeek: d.dayOfWeek,
+        name: d.name,
+        description: d.description,
+        exercises: d.exercises.map((ex) => ({
+          exerciseId: ex.exerciseId,
+          order: ex.order,
+          sets: ex.sets,
+          repsMin: ex.repsMin,
+          repsMax: ex.repsMax,
+          rpe: ex.rpe,
+          restSeconds: ex.restSeconds,
+          notes: ex.notes,
+        })),
+      })),
+    })),
+  };
+
+  return (
+    <div className="min-h-screen bg-[#0A0A0A]">
+      <div className="border-b border-zinc-800">
+        <div className="max-w-3xl mx-auto px-4 py-4 sm:py-6 flex items-center justify-between gap-3">
+          <div className="flex items-center gap-3 min-w-0">
+            <Link
+              href="/main/programs"
+              className="text-zinc-400 hover:text-white"
+              aria-label="Back to programs"
+            >
+              <ChevronLeft className="w-5 h-5" />
+            </Link>
+            <h1 className="text-xl sm:text-2xl font-bold text-white truncate">
+              {program.name}
+              {program.isActive && (
+                <span className="ml-2 text-[10px] uppercase tracking-wider bg-emerald-900/50 text-emerald-300 px-2 py-0.5 rounded font-normal">
+                  active
+                </span>
+              )}
+            </h1>
+          </div>
+          <ProgramActions programId={program.id} />
+        </div>
+      </div>
+
+      <div className="max-w-3xl mx-auto px-4 py-6 space-y-6">
+        {todaysSession?.day && (
+          <section className="bg-emerald-950/30 border border-emerald-900 rounded p-4">
+            <p className="text-[11px] uppercase tracking-wider text-emerald-400">
+              Today · Week {todaysSession.weekNumber} ·{' '}
+              {DAY_LABELS[todaysSession.dayOfWeek]}
+            </p>
+            <h2 className="text-lg font-bold text-white mt-1">
+              {todaysSession.day.name ??
+                `${DAY_LABELS[todaysSession.dayOfWeek]} session`}
+            </h2>
+            <ul className="mt-2 space-y-1 text-sm text-zinc-300">
+              {todaysSession.day.exercises.map((ex) => (
+                <li key={ex.id}>
+                  {ex.exercise.name}
+                  {ex.sets && (
+                    <span className="text-zinc-500">
+                      {' '}
+                      · {ex.sets}×
+                      {ex.repsMin === ex.repsMax || !ex.repsMax
+                        ? (ex.repsMin ?? '?')
+                        : `${ex.repsMin}-${ex.repsMax}`}
+                      {ex.rpe ? ` @ RPE ${ex.rpe}` : ''}
+                    </span>
+                  )}
+                </li>
+              ))}
+            </ul>
+            <StartSessionButton
+              programId={program.id}
+              dayId={todaysSession.day.id}
+            />
+          </section>
+        )}
+
+        <ProgramEditor
+          initialProgram={draft}
+          programId={program.id}
+          exercises={exercises}
+        />
+      </div>
+    </div>
+  );
+}
diff --git a/proof-of-work/app/main/programs/new/page.tsx b/proof-of-work/app/main/programs/new/page.tsx
new file mode 100644
index 0000000..7e5fbe5
--- /dev/null
+++ b/proof-of-work/app/main/programs/new/page.tsx
@@ -0,0 +1,42 @@
+import { redirect } from 'next/navigation';
+import Link from 'next/link';
+import { ChevronLeft } from 'lucide-react';
+import { getCurrentUser } from '@/lib/auth';
+import { prisma } from '@/lib/prisma';
+import ProgramEditor from '@/components/programs/ProgramEditor';
+
+export const dynamic = 'force-dynamic';
+
+export default async function NewProgramPage() {
+  const user = await getCurrentUser();
+  if (!user) redirect('/auth/login');
+
+  const exercises = await prisma.exercise.findMany({
+    where: { userId: user.id },
+    select: { id: true, name: true, type: true },
+    orderBy: [{ type: 'asc' }, { name: 'asc' }],
+  });
+
+  return (
+    <div className="min-h-screen bg-[#0A0A0A]">
+      <div className="border-b border-zinc-800">
+        <div className="max-w-3xl mx-auto px-4 py-4 sm:py-6 flex items-center gap-3">
+          <Link
+            href="/main/programs"
+            className="text-zinc-400 hover:text-white"
+            aria-label="Back to programs"
+          >
+            <ChevronLeft className="w-5 h-5" />
+          </Link>
+          <h1 className="text-2xl sm:text-3xl font-bold text-white">
+            New program
+          </h1>
+        </div>
+      </div>
+
+      <div className="max-w-3xl mx-auto px-4 py-6">
+        <ProgramEditor exercises={exercises} />
+      </div>
+    </div>
+  );
+}
diff --git a/proof-of-work/app/main/programs/page.tsx b/proof-of-work/app/main/programs/page.tsx
new file mode 100644
index 0000000..216c87d
--- /dev/null
+++ b/proof-of-work/app/main/programs/page.tsx
@@ -0,0 +1,120 @@
+import { redirect } from 'next/navigation';
+import Link from 'next/link';
+import { Plus, Calendar, Activity } from 'lucide-react';
+import { getCurrentUser } from '@/lib/auth';
+import { getPrograms, getTodaysSession } from '@/lib/db/programs';
+
+export const dynamic = 'force-dynamic';
+
+const DAY_LABELS = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+
+export default async function ProgramsPage() {
+  const user = await getCurrentUser();
+  if (!user) redirect('/auth/login');
+
+  const [programs, today] = await Promise.all([
+    getPrograms(user.id),
+    getTodaysSession(user.id),
+  ]);
+
+  return (
+    <div className="min-h-screen bg-[#0A0A0A]">
+      <div className="border-b border-zinc-800">
+        <div className="max-w-3xl mx-auto px-4 py-4 sm:py-6 flex items-center justify-between">
+          <h1 className="text-2xl sm:text-3xl font-bold text-white">Programs</h1>
+          <Link
+            href="/main/programs/new"
+            className="inline-flex items-center gap-2 px-4 py-2 rounded bg-white text-black font-bold text-xs uppercase tracking-wider hover:bg-gray-100"
+          >
+            <Plus className="w-4 h-4" />
+            New
+          </Link>
+        </div>
+      </div>
+
+      <div className="max-w-3xl mx-auto px-4 py-6 space-y-6">
+        {today && today.day && (
+          <section className="bg-emerald-950/30 border border-emerald-900 rounded p-5">
+            <div className="flex items-start gap-3">
+              <Calendar className="w-5 h-5 text-emerald-400 mt-0.5" />
+              <div className="flex-1">
+                <p className="text-[11px] uppercase tracking-wider text-emerald-400">
+                  Today&apos;s session
+                </p>
+                <h2 className="text-lg font-bold text-white mt-1">
+                  {today.day.name ?? `${DAY_LABELS[today.dayOfWeek]} session`}
+                </h2>
+                <p className="text-xs text-zinc-400 mt-0.5">
+                  {today.program.name} · Week {today.weekNumber} ·{' '}
+                  {today.day.exercises.length} exercise
+                  {today.day.exercises.length === 1 ? '' : 's'}
+                </p>
+                <Link
+                  href={`/main/programs/${today.program.id}`}
+                  className="inline-block mt-3 text-xs text-emerald-300 underline"
+                >
+                  Open program →
+                </Link>
+              </div>
+            </div>
+          </section>
+        )}
+
+        {programs.length === 0 ? (
+          <div className="text-center py-16">
+            <Activity className="w-12 h-12 text-zinc-700 mx-auto mb-3" />
+            <h2 className="text-lg font-semibold text-white mb-2">
+              No programs yet
+            </h2>
+            <p className="text-zinc-500 mb-6 text-sm">
+              Build a multi-week training plan, then follow it day by day.
+            </p>
+            <Link
+              href="/main/programs/new"
+              className="inline-flex items-center gap-2 px-5 py-2.5 rounded bg-white text-black font-semibold text-sm hover:bg-gray-100"
+            >
+              <Plus className="w-4 h-4" />
+              Create your first program
+            </Link>
+          </div>
+        ) : (
+          <ul className="space-y-3">
+            {programs.map((p) => (
+              <li key={p.id}>
+                <Link
+                  href={`/main/programs/${p.id}`}
+                  className="block bg-zinc-900 border border-zinc-800 rounded p-4 hover:border-zinc-700 transition"
+                >
+                  <div className="flex items-start justify-between gap-3">
+                    <div className="min-w-0">
+                      <h3 className="text-base font-semibold text-white truncate">
+                        {p.name}
+                      </h3>
+                      <p className="text-xs text-zinc-500 mt-0.5">
+                        {p.type} · {p.durationWeeks} week
+                        {p.durationWeeks === 1 ? '' : 's'} · started{' '}
+                        {new Date(p.startDate).toLocaleDateString()} ·{' '}
+                        {p._count.weeks} week
+                        {p._count.weeks === 1 ? '' : 's'} planned
+                      </p>
+                      {p.description && (
+                        <p className="text-xs text-zinc-400 mt-1 line-clamp-2">
+                          {p.description}
+                        </p>
+                      )}
+                    </div>
+                    {p.isActive && (
+                      <span className="text-[10px] uppercase tracking-wider bg-emerald-900/50 text-emerald-300 px-2 py-0.5 rounded flex-shrink-0">
+                        active
+                      </span>
+                    )}
+                  </div>
+                </Link>
+              </li>
+            ))}
+          </ul>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/proof-of-work/components/programs/ProgramActions.tsx b/proof-of-work/components/programs/ProgramActions.tsx
new file mode 100644
index 0000000..e79eeb6
--- /dev/null
+++ b/proof-of-work/components/programs/ProgramActions.tsx
@@ -0,0 +1,44 @@
+'use client';
+
+import { useTransition } from 'react';
+import { useRouter } from 'next/navigation';
+import { Trash2 } from 'lucide-react';
+
+export default function ProgramActions({ programId }: { programId: string }) {
+  const router = useRouter();
+  const [pending, startTransition] = useTransition();
+
+  const handleDelete = () => {
+    if (
+      !confirm(
+        'Delete this program? Workouts you logged against it stay; only the plan goes away.',
+      )
+    ) {
+      return;
+    }
+    startTransition(async () => {
+      const res = await fetch(`/api/programs/${programId}`, {
+        method: 'DELETE',
+      });
+      if (res.ok) {
+        router.push('/main/programs');
+        router.refresh();
+      } else {
+        const body = await res.json().catch(() => ({}));
+        alert(body.error ?? `HTTP ${res.status}`);
+      }
+    });
+  };
+
+  return (
+    <button
+      type="button"
+      onClick={handleDelete}
+      disabled={pending}
+      className="text-xs px-3 py-1.5 rounded border border-red-900 text-red-400 hover:bg-red-900/30 disabled:opacity-50"
+    >
+      <Trash2 className="inline w-3.5 h-3.5 mr-1" />
+      Delete
+    </button>
+  );
+}
diff --git a/proof-of-work/components/programs/ProgramEditor.tsx b/proof-of-work/components/programs/ProgramEditor.tsx
new file mode 100644
index 0000000..ec8f6ab
--- /dev/null
+++ b/proof-of-work/components/programs/ProgramEditor.tsx
@@ -0,0 +1,686 @@
+'use client';
+
+import { useState } from 'react';
+import { useRouter } from 'next/navigation';
+import { Plus, Trash2, ChevronDown, ChevronRight, Loader2 } from 'lucide-react';
+
+const DAY_LABELS = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+
+interface LibraryExercise {
+  id: string;
+  name: string;
+  type: string;
+}
+
+export interface DraftExercise {
+  exerciseId: string;
+  order: number;
+  sets?: number | null;
+  repsMin?: number | null;
+  repsMax?: number | null;
+  rpe?: number | null;
+  restSeconds?: number | null;
+  notes?: string | null;
+}
+export interface DraftDay {
+  dayOfWeek: number;
+  name?: string | null;
+  description?: string | null;
+  exercises: DraftExercise[];
+}
+export interface DraftWeek {
+  weekNumber: number;
+  phase?: string | null;
+  description?: string | null;
+  days: DraftDay[];
+}
+export interface DraftProgram {
+  name: string;
+  description?: string | null;
+  type: string;
+  durationWeeks: number;
+  startDate: string; // ISO yyyy-mm-dd
+  isActive: boolean;
+  weeks: DraftWeek[];
+}
+
+const TYPE_OPTIONS = [
+  'hypertrophy',
+  'strength',
+  'power',
+  'endurance',
+  'recovery',
+  'general',
+];
+
+export default function ProgramEditor({
+  initialProgram,
+  programId,
+  exercises,
+}: {
+  initialProgram?: DraftProgram;
+  programId?: string; // if present, this is an edit; otherwise create
+  exercises: LibraryExercise[];
+}) {
+  const router = useRouter();
+  const [program, setProgram] = useState<DraftProgram>(
+    initialProgram ?? {
+      name: '',
+      description: '',
+      type: 'hypertrophy',
+      durationWeeks: 8,
+      startDate: new Date().toISOString().slice(0, 10),
+      isActive: false,
+      weeks: [],
+    },
+  );
+  const [saving, setSaving] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  // Track expansion state for the tree
+  const [openWeeks, setOpenWeeks] = useState<Record<number, boolean>>({});
+
+  const update = (patch: Partial<DraftProgram>) =>
+    setProgram((p) => ({ ...p, ...patch }));
+
+  const addWeek = () => {
+    const nextNum = Math.max(0, ...program.weeks.map((w) => w.weekNumber)) + 1;
+    setProgram((p) => ({
+      ...p,
+      weeks: [...p.weeks, { weekNumber: nextNum, phase: null, days: [] }].sort(
+        (a, b) => a.weekNumber - b.weekNumber,
+      ),
+    }));
+    setOpenWeeks((s) => ({ ...s, [nextNum]: true }));
+  };
+
+  const removeWeek = (weekNumber: number) => {
+    if (!confirm(`Remove week ${weekNumber}?`)) return;
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.filter((w) => w.weekNumber !== weekNumber),
+    }));
+  };
+
+  const updateWeek = (weekNumber: number, patch: Partial<DraftWeek>) =>
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber ? { ...w, ...patch } : w,
+      ),
+    }));
+
+  const addDay = (weekNumber: number, dayOfWeek: number) => {
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber
+          ? {
+              ...w,
+              days: [
+                ...w.days,
+                { dayOfWeek, name: null, description: null, exercises: [] },
+              ].sort((a, b) => a.dayOfWeek - b.dayOfWeek),
+            }
+          : w,
+      ),
+    }));
+  };
+
+  const removeDay = (weekNumber: number, dayOfWeek: number) =>
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber
+          ? { ...w, days: w.days.filter((d) => d.dayOfWeek !== dayOfWeek) }
+          : w,
+      ),
+    }));
+
+  const updateDay = (
+    weekNumber: number,
+    dayOfWeek: number,
+    patch: Partial<DraftDay>,
+  ) =>
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber
+          ? {
+              ...w,
+              days: w.days.map((d) =>
+                d.dayOfWeek === dayOfWeek ? { ...d, ...patch } : d,
+              ),
+            }
+          : w,
+      ),
+    }));
+
+  const addExercise = (
+    weekNumber: number,
+    dayOfWeek: number,
+    exerciseId: string,
+  ) => {
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber
+          ? {
+              ...w,
+              days: w.days.map((d) =>
+                d.dayOfWeek === dayOfWeek
+                  ? {
+                      ...d,
+                      exercises: [
+                        ...d.exercises,
+                        {
+                          exerciseId,
+                          order: d.exercises.length,
+                          sets: 3,
+                          repsMin: 8,
+                          repsMax: 12,
+                          rpe: null,
+                          restSeconds: 90,
+                          notes: null,
+                        },
+                      ],
+                    }
+                  : d,
+              ),
+            }
+          : w,
+      ),
+    }));
+  };
+
+  const updateExercise = (
+    weekNumber: number,
+    dayOfWeek: number,
+    order: number,
+    patch: Partial<DraftExercise>,
+  ) =>
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber
+          ? {
+              ...w,
+              days: w.days.map((d) =>
+                d.dayOfWeek === dayOfWeek
+                  ? {
+                      ...d,
+                      exercises: d.exercises.map((ex) =>
+                        ex.order === order ? { ...ex, ...patch } : ex,
+                      ),
+                    }
+                  : d,
+              ),
+            }
+          : w,
+      ),
+    }));
+
+  const removeExercise = (
+    weekNumber: number,
+    dayOfWeek: number,
+    order: number,
+  ) =>
+    setProgram((p) => ({
+      ...p,
+      weeks: p.weeks.map((w) =>
+        w.weekNumber === weekNumber
+          ? {
+              ...w,
+              days: w.days.map((d) =>
+                d.dayOfWeek === dayOfWeek
+                  ? {
+                      ...d,
+                      exercises: d.exercises
+                        .filter((ex) => ex.order !== order)
+                        .map((ex, idx) => ({ ...ex, order: idx })),
+                    }
+                  : d,
+              ),
+            }
+          : w,
+      ),
+    }));
+
+  const handleSave = async () => {
+    if (!program.name.trim()) {
+      setError('Program name is required.');
+      return;
+    }
+    setError(null);
+    setSaving(true);
+    try {
+      const url = programId ? `/api/programs/${programId}` : '/api/programs';
+      const method = programId ? 'PATCH' : 'POST';
+      const res = await fetch(url, {
+        method,
+        headers: { 'content-type': 'application/json' },
+        body: JSON.stringify(program),
+      });
+      if (!res.ok) {
+        const body = await res.json().catch(() => ({}));
+        throw new Error(body.error ?? `HTTP ${res.status}`);
+      }
+      const saved = await res.json();
+      router.push(`/main/programs/${saved.id}`);
+      router.refresh();
+    } catch (e) {
+      setError((e as Error).message);
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  const exerciseLookup = new Map(exercises.map((e) => [e.id, e]));
+
+  return (
+    <div className="space-y-6">
+      {/* Top-level metadata */}
+      <section className="bg-zinc-900 border border-zinc-800 rounded p-4 space-y-4">
+        <Field label="Name">
+          <input
+            value={program.name}
+            onChange={(e) => update({ name: e.target.value })}
+            placeholder="8 Week Hypertrophy"
+            className={inputClass}
+          />
+        </Field>
+        <Field label="Description (optional)">
+          <textarea
+            value={program.description ?? ''}
+            onChange={(e) => update({ description: e.target.value || null })}
+            rows={2}
+            className={inputClass}
+          />
+        </Field>
+        <div className="grid grid-cols-2 sm:grid-cols-4 gap-3">
+          <Field label="Type">
+            <select
+              value={program.type}
+              onChange={(e) => update({ type: e.target.value })}
+              className={inputClass}
+            >
+              {TYPE_OPTIONS.map((t) => (
+                <option key={t} value={t}>
+                  {t}
+                </option>
+              ))}
+            </select>
+          </Field>
+          <Field label="Duration (weeks)">
+            <input
+              type="number"
+              min={1}
+              max={52}
+              value={program.durationWeeks}
+              onChange={(e) =>
+                update({ durationWeeks: parseInt(e.target.value || '1', 10) })
+              }
+              className={inputClass}
+            />
+          </Field>
+          <Field label="Start date">
+            <input
+              type="date"
+              value={program.startDate}
+              onChange={(e) => update({ startDate: e.target.value })}
+              className={inputClass}
+            />
+          </Field>
+          <Field label="Active">
+            <button
+              type="button"
+              onClick={() => update({ isActive: !program.isActive })}
+              className={`mt-1 inline-flex items-center h-9 px-3 rounded border text-xs uppercase tracking-wider ${
+                program.isActive
+                  ? 'bg-emerald-900/40 border-emerald-800 text-emerald-300'
+                  : 'border-zinc-700 text-zinc-400'
+              }`}
+            >
+              {program.isActive ? 'Active' : 'Inactive'}
+            </button>
+          </Field>
+        </div>
+      </section>
+
+      {/* Weeks */}
+      <section className="space-y-3">
+        <div className="flex items-center justify-between">
+          <h2 className="text-sm font-semibold text-white uppercase tracking-wider">
+            Weeks ({program.weeks.length})
+          </h2>
+          <button
+            type="button"
+            onClick={addWeek}
+            className="text-xs px-3 py-1.5 rounded border border-zinc-700 text-white hover:bg-zinc-800"
+          >
+            <Plus className="inline w-3.5 h-3.5 mr-1" />
+            Add week
+          </button>
+        </div>
+
+        {program.weeks.length === 0 && (
+          <p className="text-xs text-zinc-500">
+            No weeks yet. Click <strong>Add week</strong> to start the plan.
+          </p>
+        )}
+
+        {program.weeks.map((w) => (
+          <div
+            key={w.weekNumber}
+            className="bg-zinc-900 border border-zinc-800 rounded"
+          >
+            <div className="flex items-center justify-between px-4 py-2 border-b border-zinc-800">
+              <button
+                type="button"
+                onClick={() =>
+                  setOpenWeeks((s) => ({ ...s, [w.weekNumber]: !s[w.weekNumber] }))
+                }
+                className="flex items-center gap-2 text-sm text-white"
+              >
+                {openWeeks[w.weekNumber] ? (
+                  <ChevronDown className="w-4 h-4" />
+                ) : (
+                  <ChevronRight className="w-4 h-4" />
+                )}
+                Week {w.weekNumber}
+                {w.phase && (
+                  <span className="text-xs text-zinc-500">· {w.phase}</span>
+                )}
+                <span className="text-xs text-zinc-600">
+                  ({w.days.length} day{w.days.length === 1 ? '' : 's'})
+                </span>
+              </button>
+              <button
+                type="button"
+                onClick={() => removeWeek(w.weekNumber)}
+                className="text-xs text-red-400 hover:text-red-300"
+              >
+                <Trash2 className="w-3.5 h-3.5" />
+              </button>
+            </div>
+
+            {openWeeks[w.weekNumber] && (
+              <div className="p-4 space-y-3">
+                <div className="grid grid-cols-1 sm:grid-cols-2 gap-3">
+                  <Field label="Phase (optional)">
+                    <input
+                      value={w.phase ?? ''}
+                      onChange={(e) =>
+                        updateWeek(w.weekNumber, {
+                          phase: e.target.value || null,
+                        })
+                      }
+                      placeholder="Volume, intensity, deload..."
+                      className={inputClass}
+                    />
+                  </Field>
+                  <Field label="Notes (optional)">
+                    <input
+                      value={w.description ?? ''}
+                      onChange={(e) =>
+                        updateWeek(w.weekNumber, {
+                          description: e.target.value || null,
+                        })
+                      }
+                      className={inputClass}
+                    />
+                  </Field>
+                </div>
+
+                {/* Day picker */}
+                <div className="flex items-center gap-2 flex-wrap">
+                  <span className="text-xs text-zinc-500 uppercase tracking-wider">
+                    Add day:
+                  </span>
+                  {DAY_LABELS.map((label, idx) => {
+                    const exists = w.days.some((d) => d.dayOfWeek === idx);
+                    return (
+                      <button
+                        key={idx}
+                        type="button"
+                        disabled={exists}
+                        onClick={() => addDay(w.weekNumber, idx)}
+                        className={`text-xs px-2 py-1 rounded border ${
+                          exists
+                            ? 'border-zinc-800 text-zinc-700 cursor-not-allowed'
+                            : 'border-zinc-700 text-zinc-300 hover:bg-zinc-800'
+                        }`}
+                      >
+                        {label}
+                      </button>
+                    );
+                  })}
+                </div>
+
+                {/* Days */}
+                <div className="space-y-2">
+                  {w.days.map((d) => (
+                    <DayRow
+                      key={d.dayOfWeek}
+                      day={d}
+                      weekNumber={w.weekNumber}
+                      exercises={exercises}
+                      exerciseLookup={exerciseLookup}
+                      onUpdateDay={(patch) => updateDay(w.weekNumber, d.dayOfWeek, patch)}
+                      onRemoveDay={() => removeDay(w.weekNumber, d.dayOfWeek)}
+                      onAddExercise={(exId) => addExercise(w.weekNumber, d.dayOfWeek, exId)}
+                      onUpdateExercise={(order, patch) =>
+                        updateExercise(w.weekNumber, d.dayOfWeek, order, patch)
+                      }
+                      onRemoveExercise={(order) =>
+                        removeExercise(w.weekNumber, d.dayOfWeek, order)
+                      }
+                    />
+                  ))}
+                </div>
+              </div>
+            )}
+          </div>
+        ))}
+      </section>
+
+      {error && (
+        <div className="rounded bg-red-900/50 px-4 py-3 border border-red-800 text-sm text-red-400">
+          {error}
+        </div>
+      )}
+
+      <div className="flex gap-2">
+        <button
+          type="button"
+          onClick={handleSave}
+          disabled={saving}
+          className="px-5 py-2 rounded bg-white text-black font-bold text-sm uppercase tracking-wider hover:bg-gray-100 disabled:bg-zinc-700 disabled:text-zinc-500"
+        >
+          {saving ? (
+            <>
+              <Loader2 className="inline w-4 h-4 animate-spin mr-2" />
+              Saving...
+            </>
+          ) : programId ? (
+            'Save changes'
+          ) : (
+            'Create program'
+          )}
+        </button>
+      </div>
+    </div>
+  );
+}
+
+function DayRow({
+  day,
+  weekNumber: _weekNumber,
+  exercises,
+  exerciseLookup,
+  onUpdateDay,
+  onRemoveDay,
+  onAddExercise,
+  onUpdateExercise,
+  onRemoveExercise,
+}: {
+  day: DraftDay;
+  weekNumber: number;
+  exercises: LibraryExercise[];
+  exerciseLookup: Map<string, LibraryExercise>;
+  onUpdateDay: (patch: Partial<DraftDay>) => void;
+  onRemoveDay: () => void;
+  onAddExercise: (exerciseId: string) => void;
+  onUpdateExercise: (order: number, patch: Partial<DraftExercise>) => void;
+  onRemoveExercise: (order: number) => void;
+}) {
+  const [pickerValue, setPickerValue] = useState('');
+  return (
+    <div className="bg-zinc-950 border border-zinc-800 rounded p-3 space-y-3">
+      <div className="flex items-center justify-between gap-2">
+        <span className="text-xs font-semibold text-zinc-300 uppercase tracking-wider">
+          {DAY_LABELS[day.dayOfWeek]}
+        </span>
+        <input
+          value={day.name ?? ''}
+          onChange={(e) => onUpdateDay({ name: e.target.value || null })}
+          placeholder="Day name (Push, Pull, Lower, etc.)"
+          className="flex-1 px-2 py-1 text-sm rounded border border-zinc-700 bg-zinc-900 text-white placeholder:text-zinc-600"
+        />
+        <button
+          type="button"
+          onClick={onRemoveDay}
+          className="text-xs text-red-400 hover:text-red-300 p-1"
+        >
+          <Trash2 className="w-3.5 h-3.5" />
+        </button>
+      </div>
+
+      {day.exercises.map((ex) => {
+        const lib = exerciseLookup.get(ex.exerciseId);
+        return (
+          <div
+            key={ex.order}
+            className="bg-zinc-900 border border-zinc-800 rounded p-2 space-y-2"
+          >
+            <div className="flex items-center justify-between gap-2">
+              <span className="text-sm text-white">
+                {lib?.name ?? '(missing exercise)'}
+              </span>
+              <button
+                type="button"
+                onClick={() => onRemoveExercise(ex.order)}
+                className="text-xs text-red-400 hover:text-red-300"
+              >
+                <Trash2 className="w-3.5 h-3.5" />
+              </button>
+            </div>
+            <div className="grid grid-cols-3 sm:grid-cols-6 gap-2">
+              <NumField
+                label="Sets"
+                value={ex.sets ?? null}
+                onChange={(v) => onUpdateExercise(ex.order, { sets: v })}
+              />
+              <NumField
+                label="Reps min"
+                value={ex.repsMin ?? null}
+                onChange={(v) => onUpdateExercise(ex.order, { repsMin: v })}
+              />
+              <NumField
+                label="Reps max"
+                value={ex.repsMax ?? null}
+                onChange={(v) => onUpdateExercise(ex.order, { repsMax: v })}
+              />
+              <NumField
+                label="RPE"
+                value={ex.rpe ?? null}
+                onChange={(v) => onUpdateExercise(ex.order, { rpe: v })}
+              />
+              <NumField
+                label="Rest (s)"
+                value={ex.restSeconds ?? null}
+                onChange={(v) => onUpdateExercise(ex.order, { restSeconds: v })}
+              />
+              <Field label="Notes">
+                <input
+                  value={ex.notes ?? ''}
+                  onChange={(e) =>
+                    onUpdateExercise(ex.order, { notes: e.target.value || null })
+                  }
+                  className="w-full px-2 py-1 text-xs rounded border border-zinc-700 bg-zinc-800 text-white"
+                />
+              </Field>
+            </div>
+          </div>
+        );
+      })}
+
+      <div className="flex items-center gap-2">
+        <select
+          value={pickerValue}
+          onChange={(e) => setPickerValue(e.target.value)}
+          className="flex-1 px-2 py-1 text-sm rounded border border-zinc-700 bg-zinc-900 text-white"
+        >
+          <option value="">Add exercise...</option>
+          {exercises.map((e) => (
+            <option key={e.id} value={e.id}>
+              {e.name} ({e.type})
+            </option>
+          ))}
+        </select>
+        <button
+          type="button"
+          disabled={!pickerValue}
+          onClick={() => {
+            if (pickerValue) {
+              onAddExercise(pickerValue);
+              setPickerValue('');
+            }
+          }}
+          className="text-xs px-3 py-1.5 rounded border border-zinc-700 text-white hover:bg-zinc-800 disabled:opacity-40"
+        >
+          <Plus className="inline w-3.5 h-3.5 mr-1" />
+          Add
+        </button>
+      </div>
+    </div>
+  );
+}
+
+const inputClass =
+  'w-full px-3 py-2 text-sm rounded border border-zinc-700 bg-zinc-800 text-white placeholder:text-zinc-500 focus:outline-none focus:ring-2 focus:ring-white/30';
+
+function Field({ label, children }: { label: string; children: React.ReactNode }) {
+  return (
+    <label className="block">
+      <span className="text-[11px] font-semibold text-zinc-400 uppercase tracking-wider block mb-1">
+        {label}
+      </span>
+      {children}
+    </label>
+  );
+}
+
+function NumField({
+  label,
+  value,
+  onChange,
+}: {
+  label: string;
+  value: number | null;
+  onChange: (v: number | null) => void;
+}) {
+  return (
+    <Field label={label}>
+      <input
+        type="number"
+        value={value ?? ''}
+        onChange={(e) => {
+          const v = e.target.value;
+          onChange(v === '' ? null : Number(v));
+        }}
+        className="w-full px-2 py-1 text-xs rounded border border-zinc-700 bg-zinc-800 text-white"
+      />
+    </Field>
+  );
+}
diff --git a/proof-of-work/components/programs/StartSessionButton.tsx b/proof-of-work/components/programs/StartSessionButton.tsx
new file mode 100644
index 0000000..ec4dae9
--- /dev/null
+++ b/proof-of-work/components/programs/StartSessionButton.tsx
@@ -0,0 +1,55 @@
+'use client';
+
+import { useState } from 'react';
+import { useRouter } from 'next/navigation';
+import { Loader2 } from 'lucide-react';
+
+export default function StartSessionButton({
+  programId,
+  dayId,
+}: {
+  programId: string;
+  dayId: string;
+}) {
+  const router = useRouter();
+  const [busy, setBusy] = useState(false);
+
+  const handleClick = async () => {
+    setBusy(true);
+    try {
+      const res = await fetch(
+        `/api/programs/${programId}/days/${dayId}/start`,
+        { method: 'POST' },
+      );
+      if (!res.ok) {
+        const body = await res.json().catch(() => ({}));
+        alert(body.error ?? `HTTP ${res.status}`);
+        setBusy(false);
+        return;
+      }
+      const workout = await res.json();
+      router.push(`/main/workouts/${workout.id}`);
+    } catch (e) {
+      alert((e as Error).message);
+      setBusy(false);
+    }
+  };
+
+  return (
+    <button
+      type="button"
+      onClick={handleClick}
+      disabled={busy}
+      className="mt-3 inline-block text-xs uppercase tracking-wider px-3 py-1.5 rounded bg-emerald-700 hover:bg-emerald-600 text-white font-bold disabled:opacity-50"
+    >
+      {busy ? (
+        <>
+          <Loader2 className="inline w-3.5 h-3.5 animate-spin mr-1" />
+          Starting...
+        </>
+      ) : (
+        'Start this session →'
+      )}
+    </button>
+  );
+}
diff --git a/proof-of-work/lib/db/programs.ts b/proof-of-work/lib/db/programs.ts
new file mode 100644
index 0000000..099680c
--- /dev/null
+++ b/proof-of-work/lib/db/programs.ts
@@ -0,0 +1,160 @@
+import { prisma } from "../prisma";
+
+/**
+ * Server-side helpers for the Programs feature (v1.1.0:1).
+ *
+ * A "program" is a multi-week training plan: Program -> ProgramWeek
+ * -> ProgramDay -> ProgramExercise. The user follows it day-by-day,
+ * logging actual workouts that get tagged with `Workout.programDayId`
+ * so we can later compute adherence.
+ */
+
+export async function getPrograms(userId: string) {
+  return prisma.program.findMany({
+    where: { userId },
+    orderBy: [{ isActive: "desc" }, { createdAt: "desc" }],
+    include: {
+      _count: { select: { weeks: true } },
+    },
+  });
+}
+
+export async function getProgramById(userId: string, programId: string) {
+  return prisma.program.findFirst({
+    where: { id: programId, userId },
+    include: {
+      weeks: {
+        orderBy: { weekNumber: "asc" },
+        include: {
+          days: {
+            orderBy: { dayOfWeek: "asc" },
+            include: {
+              exercises: {
+                orderBy: { order: "asc" },
+                include: { exercise: true },
+              },
+            },
+          },
+        },
+      },
+    },
+  });
+}
+
+export async function getActivePrograms(userId: string) {
+  return prisma.program.findMany({
+    where: { userId, isActive: true },
+    include: {
+      weeks: {
+        orderBy: { weekNumber: "asc" },
+        include: {
+          days: {
+            orderBy: { dayOfWeek: "asc" },
+            include: {
+              exercises: {
+                orderBy: { order: "asc" },
+                include: { exercise: true },
+              },
+            },
+          },
+        },
+      },
+    },
+  });
+}
+
+/**
+ * For an active program + a target date, compute which planned
+ * ProgramDay (if any) is "today's session." Algorithm:
+ *
+ *   daysSinceStart = floor((today - startDate) / 1 day)
+ *   weekNumber     = floor(daysSinceStart / 7) + 1
+ *   dayOfWeek      = today.getDay()  (0=Sun..6=Sat)
+ *
+ * Then look up the ProgramDay matching (weekNumber, dayOfWeek). If
+ * the program has no day for today's dayOfWeek, returns null (rest
+ * day or program doesn't cover this slot).
+ *
+ * Returns null if:
+ *  - the date is before the program's startDate
+ *  - the date is past durationWeeks * 7 days from the start
+ *  - the program has no matching day for that (weekNumber, dayOfWeek)
+ *
+ * The date comparison is anchored to UTC midnight on both sides so
+ * timezone fuzz doesn't shift you across day boundaries.
+ */
+export interface TodaysSession {
+  program: {
+    id: string;
+    name: string;
+    type: string;
+    durationWeeks: number;
+    startDate: Date;
+  };
+  weekNumber: number;
+  dayOfWeek: number;
+  day: NonNullable<
+    Awaited<ReturnType<typeof getProgramById>>
+  >["weeks"][number]["days"][number] | null;
+}
+
+export function computeTodaysSessionForProgram(
+  program: NonNullable<Awaited<ReturnType<typeof getProgramById>>>,
+  today: Date,
+): TodaysSession | null {
+  const startUtc = Date.UTC(
+    program.startDate.getUTCFullYear(),
+    program.startDate.getUTCMonth(),
+    program.startDate.getUTCDate(),
+  );
+  const todayUtc = Date.UTC(
+    today.getUTCFullYear(),
+    today.getUTCMonth(),
+    today.getUTCDate(),
+  );
+
+  const dayMs = 24 * 60 * 60 * 1000;
+  const daysSinceStart = Math.floor((todayUtc - startUtc) / dayMs);
+
+  if (daysSinceStart < 0) return null; // hasn't started yet
+  if (daysSinceStart >= program.durationWeeks * 7) return null; // program over
+
+  const weekNumber = Math.floor(daysSinceStart / 7) + 1;
+  const dayOfWeek = today.getUTCDay();
+
+  const week = program.weeks.find((w) => w.weekNumber === weekNumber);
+  const day = week?.days.find((d) => d.dayOfWeek === dayOfWeek) ?? null;
+
+  return {
+    program: {
+      id: program.id,
+      name: program.name,
+      type: program.type,
+      durationWeeks: program.durationWeeks,
+      startDate: program.startDate,
+    },
+    weekNumber,
+    dayOfWeek,
+    day,
+  };
+}
+
+/**
+ * Resolve the user's "today's session" across all active programs.
+ * If multiple programs are active and have a session today, returns
+ * the most-recently-started one (only the first match in practice
+ * since active programs are usually unique).
+ */
+export async function getTodaysSession(
+  userId: string,
+  today: Date = new Date(),
+): Promise<TodaysSession | null> {
+  const programs = await getActivePrograms(userId);
+  for (const p of programs.sort(
+    (a, b) => b.startDate.getTime() - a.startDate.getTime(),
+  )) {
+    const session = computeTodaysSessionForProgram(p, today);
+    if (session?.day) return session;
+  }
+  return null;
+}
diff --git a/proof-of-work/prisma/schema.prisma b/proof-of-work/prisma/schema.prisma
index 997ace8..83c0f64 100644
--- a/proof-of-work/prisma/schema.prisma
+++ b/proof-of-work/prisma/schema.prisma
@@ -82,17 +82,23 @@ model Workout {
   durationMinutes    Int?
   difficulty         Int?      // 1-10 scale
   caloriesBurned     Int?
+  /// Optional: which planned ProgramDay this workout was logged
+  /// against. Set when the user clicks "Start workout from program
+  /// day" so we can later compute adherence vs plan.
+  programDayId       String?
   deletedAt          DateTime?
   createdAt          DateTime  @default(now())
   updatedAt          DateTime  @updatedAt
 
   // Relations
-  user               User      @relation(fields: [userId], references: [id], onDelete: Cascade)
+  user               User       @relation(fields: [userId], references: [id], onDelete: Cascade)
   setLogs            SetLog[]
+  programDay         ProgramDay? @relation(fields: [programDayId], references: [id], onDelete: SetNull)
 
   @@index([userId])
   @@index([date])
   @@index([deletedAt])
+  @@index([programDayId])
   // Hot path: workout list page is `where userId AND deletedAt IS NULL
   // ORDER BY date DESC LIMIT N`. Composite index lets SQLite walk it
   // straight off the index without sorting.
@@ -178,6 +184,7 @@ model ProgramDay {
   // Relations
   week               ProgramWeek @relation(fields: [weekId], references: [id], onDelete: Cascade)
   exercises          ProgramExercise[]
+  workouts           Workout[]   // sessions logged against this planned day
 
   @@unique([weekId, dayOfWeek])
   @@index([weekId])
diff --git a/proof-of-work/tests/routes-programs.test.ts b/proof-of-work/tests/routes-programs.test.ts
new file mode 100644
index 0000000..4c61ea7
--- /dev/null
+++ b/proof-of-work/tests/routes-programs.test.ts
@@ -0,0 +1,492 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+
+const { getCurrentUserMock } = vi.hoisted(() => ({
+  getCurrentUserMock: vi.fn(),
+}));
+vi.mock('@/lib/auth', async (orig) => {
+  const actual = (await orig()) as Record<string, unknown>;
+  return { ...actual, getCurrentUser: getCurrentUserMock };
+});
+vi.mock('next/cache', () => ({ revalidatePath: vi.fn() }));
+
+import { NextRequest } from 'next/server';
+import { prisma } from '@/lib/prisma';
+import {
+  GET as getPrograms,
+  POST as createProgram,
+} from '@/app/api/programs/route';
+import {
+  GET as getProgram,
+  PATCH as patchProgram,
+  DELETE as deleteProgram,
+} from '@/app/api/programs/[id]/route';
+import { POST as startDay } from '@/app/api/programs/[id]/days/[dayId]/start/route';
+
+function jsonReq(url: string, body?: unknown, method?: string): NextRequest {
+  return new NextRequest(url, {
+    method: method ?? (body !== undefined ? 'POST' : 'GET'),
+    headers: { 'content-type': 'application/json' },
+    body: body !== undefined ? JSON.stringify(body) : undefined,
+  } as ConstructorParameters<typeof NextRequest>[1]);
+}
+
+async function makeUserAndExercises(opts: {
+  email: string;
+  exerciseNames: string[];
+}) {
+  const user = await prisma.user.create({
+    data: { email: opts.email, passwordHash: 'fake', isAdmin: false },
+  });
+  const exercises = [];
+  for (const name of opts.exerciseNames) {
+    exercises.push(
+      await prisma.exercise.create({
+        data: {
+          userId: user.id,
+          name,
+          type: 'barbell',
+          muscleGroups: '[]',
+        },
+      }),
+    );
+  }
+  return { user, exercises };
+}
+
+beforeEach(async () => {
+  await prisma.session.deleteMany();
+  await prisma.setLog.deleteMany();
+  await prisma.workout.deleteMany();
+  await prisma.programExercise.deleteMany();
+  await prisma.programDay.deleteMany();
+  await prisma.programWeek.deleteMany();
+  await prisma.program.deleteMany();
+  await prisma.exercise.deleteMany();
+  await prisma.user.deleteMany();
+  await prisma.instanceSettings.deleteMany();
+  getCurrentUserMock.mockReset();
+});
+
+describe('POST /api/programs', () => {
+  it('returns 401 unauthenticated', async () => {
+    getCurrentUserMock.mockResolvedValue(null);
+    const res = await createProgram(
+      jsonReq('http://x/api/programs', {
+        name: 'X',
+        type: 'hypertrophy',
+        durationWeeks: 4,
+        startDate: new Date().toISOString(),
+      }),
+    );
+    expect(res.status).toBe(401);
+  });
+
+  it('creates a program with the full nested tree in one transaction', async () => {
+    const { user, exercises } = await makeUserAndExercises({
+      email: 'a@x',
+      exerciseNames: ['Bench Press', 'Squat'],
+    });
+    getCurrentUserMock.mockResolvedValue(user);
+
+    const res = await createProgram(
+      jsonReq('http://x/api/programs', {
+        name: 'Test 4-week',
+        type: 'hypertrophy',
+        durationWeeks: 4,
+        startDate: '2026-05-10',
+        weeks: [
+          {
+            weekNumber: 1,
+            phase: 'Volume',
+            days: [
+              {
+                dayOfWeek: 1,
+                name: 'Push',
+                exercises: [
+                  {
+                    exerciseId: exercises[0].id,
+                    order: 0,
+                    sets: 4,
+                    repsMin: 6,
+                    repsMax: 10,
+                  },
+                ],
+              },
+              {
+                dayOfWeek: 3,
+                name: 'Pull',
+                exercises: [],
+              },
+            ],
+          },
+          {
+            weekNumber: 2,
+            days: [
+              {
+                dayOfWeek: 1,
+                name: 'Push',
+                exercises: [
+                  {
+                    exerciseId: exercises[0].id,
+                    order: 0,
+                    sets: 4,
+                    repsMin: 6,
+                    repsMax: 10,
+                  },
+                  {
+                    exerciseId: exercises[1].id,
+                    order: 1,
+                    sets: 5,
+                    repsMin: 5,
+                    repsMax: 5,
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+      }),
+    );
+    expect(res.status).toBe(201);
+
+    const programs = await prisma.program.findMany({
+      where: { userId: user.id },
+      include: {
+        weeks: {
+          include: {
+            days: { include: { exercises: true } },
+          },
+        },
+      },
+    });
+    expect(programs).toHaveLength(1);
+    expect(programs[0].weeks).toHaveLength(2);
+    const week2 = programs[0].weeks.find((w) => w.weekNumber === 2);
+    expect(week2!.days[0].exercises).toHaveLength(2);
+  });
+
+  it('rejects exerciseIds that belong to a different user', async () => {
+    const { exercises: aliceExs } = await makeUserAndExercises({
+      email: 'alice@x',
+      exerciseNames: ['Alice Squat'],
+    });
+    const { user: bob } = await makeUserAndExercises({
+      email: 'bob@x',
+      exerciseNames: [],
+    });
+    getCurrentUserMock.mockResolvedValue(bob);
+
+    const res = await createProgram(
+      jsonReq('http://x/api/programs', {
+        name: 'Bob trying to use Alice exercise',
+        type: 'hypertrophy',
+        durationWeeks: 1,
+        startDate: '2026-05-10',
+        weeks: [
+          {
+            weekNumber: 1,
+            days: [
+              {
+                dayOfWeek: 1,
+                exercises: [{ exerciseId: aliceExs[0].id, order: 0, sets: 3 }],
+              },
+            ],
+          },
+        ],
+      }),
+    );
+    expect(res.status).toBe(400);
+  });
+});
+
+describe('GET /api/programs + GET /api/programs/[id]', () => {
+  it('lists programs scoped to the actor and returns full tree on detail', async () => {
+    const { user, exercises } = await makeUserAndExercises({
+      email: 'a@x',
+      exerciseNames: ['Bench'],
+    });
+    getCurrentUserMock.mockResolvedValue(user);
+    await createProgram(
+      jsonReq('http://x/api/programs', {
+        name: 'Plan A',
+        type: 'hypertrophy',
+        durationWeeks: 1,
+        startDate: '2026-05-10',
+        weeks: [
+          {
+            weekNumber: 1,
+            days: [
+              {
+                dayOfWeek: 1,
+                exercises: [{ exerciseId: exercises[0].id, order: 0, sets: 3 }],
+              },
+            ],
+          },
+        ],
+      }),
+    );
+
+    const list = await (await getPrograms()).json();
+    expect(list).toHaveLength(1);
+    const programId = list[0].id;
+
+    const detail = await (
+      await getProgram(jsonReq(`http://x/api/programs/${programId}`), {
+        params: { id: programId },
+      })
+    ).json();
+    expect(detail.weeks[0].days[0].exercises[0].exercise.name).toBe('Bench');
+  });
+
+  it('GET detail returns 404 for another user\'s program', async () => {
+    const { user: aliceForOtherTest } = await makeUserAndExercises({
+      email: 'alice@x',
+      exerciseNames: [],
+    });
+    const aliceProg = await prisma.program.create({
+      data: {
+        userId: aliceForOtherTest.id,
+        name: 'Alice plan',
+        type: 'hypertrophy',
+        durationWeeks: 1,
+        startDate: new Date(),
+      },
+    });
+    const { user: bob } = await makeUserAndExercises({
+      email: 'bob@x',
+      exerciseNames: [],
+    });
+    getCurrentUserMock.mockResolvedValue(bob);
+    const res = await getProgram(
+      jsonReq(`http://x/api/programs/${aliceProg.id}`),
+      { params: { id: aliceProg.id } },
+    );
+    expect(res.status).toBe(404);
+  });
+});
+
+describe('PATCH /api/programs/[id] (replace tree)', () => {
+  it('replaces the entire weeks tree atomically', async () => {
+    const { user, exercises } = await makeUserAndExercises({
+      email: 'a@x',
+      exerciseNames: ['Bench', 'Squat'],
+    });
+    getCurrentUserMock.mockResolvedValue(user);
+    const created = await (
+      await createProgram(
+        jsonReq('http://x/api/programs', {
+          name: 'Original',
+          type: 'hypertrophy',
+          durationWeeks: 4,
+          startDate: '2026-05-10',
+          weeks: [
+            {
+              weekNumber: 1,
+              days: [
+                {
+                  dayOfWeek: 1,
+                  exercises: [
+                    { exerciseId: exercises[0].id, order: 0, sets: 3 },
+                  ],
+                },
+              ],
+            },
+          ],
+        }),
+      )
+    ).json();
+
+    const patchRes = await patchProgram(
+      jsonReq(
+        `http://x/api/programs/${created.id}`,
+        {
+          name: 'Updated name',
+          weeks: [
+            {
+              weekNumber: 1,
+              days: [
+                {
+                  dayOfWeek: 2,
+                  name: 'Pull',
+                  exercises: [
+                    { exerciseId: exercises[1].id, order: 0, sets: 5 },
+                  ],
+                },
+              ],
+            },
+          ],
+        },
+        'PATCH',
+      ),
+      { params: { id: created.id } },
+    );
+    expect(patchRes.status).toBe(200);
+
+    const after = await prisma.program.findUnique({
+      where: { id: created.id },
+      include: {
+        weeks: {
+          include: {
+            days: { include: { exercises: true } },
+          },
+        },
+      },
+    });
+    expect(after!.name).toBe('Updated name');
+    expect(after!.weeks[0].days).toHaveLength(1);
+    expect(after!.weeks[0].days[0].dayOfWeek).toBe(2);
+    expect(after!.weeks[0].days[0].exercises[0].exerciseId).toBe(
+      exercises[1].id,
+    );
+  });
+});
+
+describe('DELETE /api/programs/[id]', () => {
+  it('cascades to weeks/days/exercises and refuses cross-user', async () => {
+    const { user, exercises } = await makeUserAndExercises({
+      email: 'a@x',
+      exerciseNames: ['Bench'],
+    });
+    getCurrentUserMock.mockResolvedValue(user);
+    const created = await (
+      await createProgram(
+        jsonReq('http://x/api/programs', {
+          name: 'Will be deleted',
+          type: 'hypertrophy',
+          durationWeeks: 1,
+          startDate: '2026-05-10',
+          weeks: [
+            {
+              weekNumber: 1,
+              days: [
+                {
+                  dayOfWeek: 1,
+                  exercises: [
+                    { exerciseId: exercises[0].id, order: 0, sets: 3 },
+                  ],
+                },
+              ],
+            },
+          ],
+        }),
+      )
+    ).json();
+
+    expect(await prisma.programWeek.count()).toBeGreaterThan(0);
+    expect(await prisma.programExercise.count()).toBeGreaterThan(0);
+
+    const res = await deleteProgram(
+      jsonReq(`http://x/api/programs/${created.id}`, undefined, 'DELETE'),
+      { params: { id: created.id } },
+    );
+    expect(res.status).toBe(200);
+    expect(await prisma.programWeek.count()).toBe(0);
+    expect(await prisma.programExercise.count()).toBe(0);
+  });
+});
+
+describe('POST /api/programs/[id]/days/[dayId]/start', () => {
+  it('creates a workout pre-populated with empty SetLogs from the program day', async () => {
+    const { user, exercises } = await makeUserAndExercises({
+      email: 'a@x',
+      exerciseNames: ['Bench', 'Squat'],
+    });
+    getCurrentUserMock.mockResolvedValue(user);
+    const created = await (
+      await createProgram(
+        jsonReq('http://x/api/programs', {
+          name: 'Plan',
+          type: 'hypertrophy',
+          durationWeeks: 1,
+          startDate: '2026-05-10',
+          weeks: [
+            {
+              weekNumber: 1,
+              days: [
+                {
+                  dayOfWeek: 1,
+                  name: 'Push Day',
+                  exercises: [
+                    { exerciseId: exercises[0].id, order: 0, sets: 4 },
+                    { exerciseId: exercises[1].id, order: 1, sets: 3 },
+                  ],
+                },
+              ],
+            },
+          ],
+        }),
+      )
+    ).json();
+
+    const day = await prisma.programDay.findFirst({
+      where: { week: { programId: created.id } },
+    });
+
+    const startRes = await startDay(
+      jsonReq(
+        `http://x/api/programs/${created.id}/days/${day!.id}/start`,
+        {},
+      ),
+      { params: { id: created.id, dayId: day!.id } },
+    );
+    expect(startRes.status).toBe(201);
+    const workout = await startRes.json();
+
+    // 4 sets of Bench + 3 sets of Squat = 7 SetLogs
+    expect(workout.setLogs).toHaveLength(7);
+    expect(workout.programDayId).toBe(day!.id);
+    expect(workout.name).toBe('Push Day');
+    // SetLogs should be empty (no reps/weight) — user fills them in
+    for (const sl of workout.setLogs) {
+      expect(sl.reps).toBeNull();
+      expect(sl.weight).toBeNull();
+    }
+  });
+
+  it('refuses if the program day belongs to a different user', async () => {
+    const { user: alice, exercises: aliceExs } = await makeUserAndExercises({
+      email: 'alice@x',
+      exerciseNames: ['Alice Bench'],
+    });
+    getCurrentUserMock.mockResolvedValue(alice);
+    const aliceProg = await (
+      await createProgram(
+        jsonReq('http://x/api/programs', {
+          name: 'Alice Plan',
+          type: 'hypertrophy',
+          durationWeeks: 1,
+          startDate: '2026-05-10',
+          weeks: [
+            {
+              weekNumber: 1,
+              days: [
+                {
+                  dayOfWeek: 1,
+                  exercises: [
+                    { exerciseId: aliceExs[0].id, order: 0, sets: 3 },
+                  ],
+                },
+              ],
+            },
+          ],
+        }),
+      )
+    ).json();
+    const aliceDay = await prisma.programDay.findFirst({
+      where: { week: { programId: aliceProg.id } },
+    });
+
+    const { user: bob } = await makeUserAndExercises({
+      email: 'bob@x',
+      exerciseNames: [],
+    });
+    getCurrentUserMock.mockResolvedValue(bob);
+    const res = await startDay(
+      jsonReq(
+        `http://x/api/programs/${aliceProg.id}/days/${aliceDay!.id}/start`,
+      ),
+      { params: { id: aliceProg.id, dayId: aliceDay!.id } },
+    );
+    expect(res.status).toBe(404);
+  });
+});
diff --git a/start9/0.4/docker_entrypoint.sh b/start9/0.4/docker_entrypoint.sh
index 35685cb..26be702 100755
--- a/start9/0.4/docker_entrypoint.sh
+++ b/start9/0.4/docker_entrypoint.sh
@@ -97,6 +97,14 @@ if command -v sqlite3 >/dev/null 2>&1 && [ -f "$DB_PATH" ]; then
     sqlite3 "$DB_PATH" "ALTER TABLE User ADD COLUMN lastLoginAt DATETIME;"
   fi
 
+  # v1.1.0:1 added Workout.programDayId so workouts can be tagged with the
+  # planned ProgramDay they were logged against (for adherence tracking).
+  if ! sqlite3 "$DB_PATH" "PRAGMA table_info('Workout');" 2>/dev/null | grep -q "|programDayId|"; then
+    log "adding missing column Workout.programDayId (nullable)"
+    sqlite3 "$DB_PATH" "ALTER TABLE Workout ADD COLUMN programDayId TEXT REFERENCES ProgramDay(id) ON DELETE SET NULL;"
+    sqlite3 "$DB_PATH" "CREATE INDEX IF NOT EXISTS Workout_programDayId_idx ON Workout(programDayId);"
+  fi
+
   if ! sqlite3 "$DB_PATH" \
     "SELECT name FROM sqlite_master WHERE type='table' AND name='InstanceSettings';" \
     2>/dev/null | grep -q InstanceSettings; then
diff --git a/start9/0.4/startos/versions/index.ts b/start9/0.4/startos/versions/index.ts
index 02fe295..3c79ea6 100644
--- a/start9/0.4/startos/versions/index.ts
+++ b/start9/0.4/startos/versions/index.ts
@@ -6,20 +6,32 @@ import { v_1_0_0_4 } from './v1.0.0.4'
 import { v_1_0_0_5 } from './v1.0.0.5'
 import { v_1_0_0_6 } from './v1.0.0.6'
 import { v_1_0_0_7 } from './v1.0.0.7'
+import { v_1_1_0_1 } from './v1.1.0.1'
 
 /**
  * Version graph for the `proof-of-work` package.
  *
- * v1.0.0:1 — initial release, seeded cutover from `workout-log`.
+ * 1.0.0 line — feature-complete logger + multi-user + library curation.
+ * 1.1.0 line — Programs (manual + AI) + AI integration.
+ *
+ * v1.0.0:1 — initial release, seeded cutover.
  * v1.0.0:2 — CSP fix.
  * v1.0.0:3 — post-cutover seed strip.
  * v1.0.0:4 — removes default admin@local credentials.
- * v1.0.0:5 — internal cleanup (caloriesBurned raw-SQL workaround).
+ * v1.0.0:5 — caloriesBurned raw-SQL workaround removed.
  * v1.0.0:6 — paginate workout history (infinite scroll).
- * v1.0.0:7 — exercise library cleanup, photo-import removal,
- *            UI honesty about AI.
+ * v1.0.0:7 — exercise library cleanup, photo-import removal.
+ * v1.1.0:1 — Programs UI (manual create / save / follow).
  */
 export const versionGraph = VersionGraph.of({
-  current: v_1_0_0_7,
-  other: [v_1_0_0_1, v_1_0_0_2, v_1_0_0_3, v_1_0_0_4, v_1_0_0_5, v_1_0_0_6],
+  current: v_1_1_0_1,
+  other: [
+    v_1_0_0_1,
+    v_1_0_0_2,
+    v_1_0_0_3,
+    v_1_0_0_4,
+    v_1_0_0_5,
+    v_1_0_0_6,
+    v_1_0_0_7,
+  ],
 })
diff --git a/start9/0.4/startos/versions/v1.1.0.1.ts b/start9/0.4/startos/versions/v1.1.0.1.ts
new file mode 100644
index 0000000..bd1c598
--- /dev/null
+++ b/start9/0.4/startos/versions/v1.1.0.1.ts
@@ -0,0 +1,52 @@
+import { IMPOSSIBLE, VersionInfo } from '@start9labs/start-sdk'
+
+/**
+ * v1.1.0:1 — Programs (manual create / save / follow).
+ *
+ * The Program / ProgramWeek / ProgramDay / ProgramExercise schema
+ * has existed since the legacy `workout-log` package but had no
+ * UI to use it. This release ships:
+ *
+ *   - /main/programs (list) with a today's-session card if any
+ *     program is active.
+ *   - /main/programs/new (create form) with the full nested
+ *     editor: program metadata -> weeks -> days -> exercises.
+ *   - /main/programs/[id] (detail + edit) using the same editor,
+ *     plus today's-session callout + "Start this session"
+ *     button when applicable.
+ *   - API: GET/POST /api/programs, GET/PATCH/DELETE
+ *     /api/programs/[id]. PATCH replaces the entire weeks tree
+ *     in one transaction (same shape POST accepts) — keeps the
+ *     UI editor and the upcoming AI apply flow on the same code
+ *     path.
+ *   - "Start this session" wires through
+ *     POST /api/programs/[id]/days/[dayId]/start which creates a
+ *     Workout pre-populated with empty SetLogs from the planned
+ *     ProgramExercises (one row per planned set), tagged with
+ *     Workout.programDayId so we can later compute adherence.
+ *
+ * Schema change
+ *   - Workout.programDayId (nullable FK to ProgramDay) added.
+ *   - Compat ALTER in docker_entrypoint.sh adds the column +
+ *     index to existing /data on first boot. ON DELETE SET NULL
+ *     so deleting a program doesn't catastrophically remove
+ *     historical workouts logged against it.
+ *
+ * This release is the foundation for v1.1.0:2's AI-generated
+ * programs — the AI will produce the same JSON shape that POST
+ * /api/programs already accepts.
+ *
+ * No data migration. /data on existing installs is untouched
+ * apart from the new column.
+ */
+export const v_1_1_0_1 = VersionInfo.of({
+  version: '1.1.0:1',
+  releaseNotes: {
+    en_US:
+      'Programs UI shipped. Build a multi-week training plan, mark it active, and follow it day by day from a new "Today\'s session" card. Includes a full nested editor (program -> weeks -> days -> exercises), starts a session as a pre-populated workout you fill in as you go, and tracks Workout.programDayId for upcoming adherence analytics. Foundation for v1.1.0:2 (AI-generated programs).',
+  },
+  migrations: {
+    up: async () => {},
+    down: IMPOSSIBLE,
+  },
+})