Grant Gilliam ab910cf742 Chunk overlap + overlap-aware stitching
Chunks were contiguous (start = prev end) with a naïve offset-concat stitch — no
overlap. That cut sentences at boundaries, denied the diarizer context at edges, and
let one voice split across chunks (the MH/Unknown_0 problem). Now each ~150s body is
sliced with a 15s margin on both sides ([bodyStart-15, bodyEnd+15]); the stitcher
keeps a segment only in the chunk that owns its MIDPOINT (body region) and drops it
from the neighbour's margin — so boundary-spanning speech is seen whole by the
backend and kept exactly once.

- SessionPackager.PlannedChunk gains bodyStart/bodyEnd; planChunks adds overlapSeconds.
- TranscriptAssembler.ChunkResult carries body bounds (defaults keep-all → no-overlap
  behaviour preserved for existing callers); assemble dedups by midpoint-in-body.
- TranscriptPipeline passes body bounds through.

Complements (doesn't replace) the fragment-smoothing + reconciliation safety nets;
this is the upstream fix. ~+20% backend audio per interior chunk. 63/63 XCTest
(new: overlap window layout + boundary-segment dedup).
2026-06-08 13:03:56 -05:00

Ten31 Transcripts

Native macOS menu-bar app that auto-detects conference calls, records local audio, builds a visual-derived speaker timeline, and hands audio + timeline to the SparkControl backend for naming/transcription. See docs/ for the full spec.

This repo is at Phase 0 (scaffold, permissions, backend health check).

One-time setup

  1. Install Xcode from the Mac App Store (free; ~40 GB). Open it once and accept the license prompt.
  2. Install XcodeGen (generates the Xcode project from project.yml):
    brew install xcodegen
    
  3. Generate the project:
    xcodegen generate
    
    This creates Ten31Transcripts.xcodeproj (git-ignored — regenerate any time).
  4. Open it:
    open Ten31Transcripts.xcodeproj
    
  5. Signing is preconfigured: project.yml sets DEVELOPMENT_TEAM to the free personal team BK4Y6CXN35 with automatic signing, so Signing & Capabilities should already show the team — no manual selection needed. (If you ever sign with a different Apple ID, update DEVELOPMENT_TEAM in project.yml, not in Xcode — xcodegen generate overwrites Xcode-side changes.)
  6. Press Run (⌘R).

Note: after adding files in a new phase, re-run xcodegen generate and let Xcode reload the project. The signing team persists because it lives in project.yml, so macOS permissions stay granted across rebuilds.

What Phase 0 does

  • Launches as a menu-bar-only app (no Dock icon).
  • Menu panel shows live status for the three permissions it needs — Microphone, Screen Recording, Accessibility — with Grant / Open Settings buttons.
  • Shows a backend health check (GET /api/status) against the configured host.
  • Settings: backend base URL, skip-TLS toggle (on by default for the self-signed cert), output folder, and adapter toggles (inert this phase).

No audio capture, call detection, screen reading, or backend hand-off yet — those arrive in Phases 16 (docs/04_BUILD_PLAN.md).

Project layout

project.yml                     # XcodeGen recipe → generates the .xcodeproj
Ten31Transcripts/
  App/        Ten31TranscriptsApp.swift, AppDelegate.swift
  UI/         MenuBarView, SettingsView, PermissionRow
  Permissions/PermissionsManager.swift
  Backend/    SparkControlHealth.swift, InsecureTrustDelegate.swift
  Settings/   AppSettings.swift
  Support/    Info.plist, Ten31Transcripts.entitlements
Ten31TranscriptsTests/          # placeholder; real tests land in Phase 3

Notes

  • App Sandbox is off and Hardened Runtime is off — this is a personal, LAN-only tool that must observe other apps. Revisit only if distributing.
  • The default backend host is https://your-spark-backend.local:62419 (editable in Settings).
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