v1.2.0:5 — Gear (breathing, 1-5) replaces RPE as the effort field for cardio

Cardio exercises now log a breathing "Gear" (1-5, per Brian MacKenzie)
instead of RPE (6-10) as their effort field; strength keeps RPE. An exercise
counts as cardio when its equipment type is "cardio" or it carries the
"cardio" muscle group (isCardioExercise in lib/exerciseOptions), so the
Assault Bike (type "assault bike") qualifies.

New nullable SetLog.gear column added by the boot-time guarded ALTER in
docker_entrypoint.sh (additive, idempotent); plumbed through all 5 set-write
paths, the summary/edit views, and CSV/JSON import-export. Existing rpe data
is untouched and still displays. Program/AI target-RPE is unaffected.

start9/0.4/startos/versions/index.ts

@@ -19,6 +19,7 @@ import { v_1_2_0_1 } from './v1.2.0.1'
 import { v_1_2_0_2 } from './v1.2.0.2'
 import { v_1_2_0_3 } from './v1.2.0.3'
 import { v_1_2_0_4 } from './v1.2.0.4'
+import { v_1_2_0_5 } from './v1.2.0.5'
 
 /**
  * Version graph for the `proof-of-work` package.
@@ -76,9 +77,12 @@ import { v_1_2_0_4 } from './v1.2.0.4'
  *            column, added by the boot-time additive ALTER). Written through
  *            every set path; legacy watts in customMetrics stays readable and
  *            migrates on next save.
+ * v1.2.0:5 — Gear (breathing, 1-5, Brian MacKenzie) replaces RPE as the effort
+ *            field for cardio exercises (type "cardio" or "cardio" muscle
+ *            group); strength keeps RPE. New SetLog.gear column via boot ALTER.
  */
 export const versionGraph = VersionGraph.of({
-  current: v_1_2_0_4,
+  current: v_1_2_0_5,
   other: [
     v_1_0_0_1,
     v_1_0_0_2,
@@ -99,5 +103,6 @@ export const versionGraph = VersionGraph.of({
     v_1_2_0_1,
     v_1_2_0_2,
     v_1_2_0_3,
+    v_1_2_0_4,
   ],
 })