feat(definitions): enable Binky operating-rhythm definitions (DEC-2026-003 cutover)

Founder-approved cutover 2026-07-18. binky_rhythm_status resolver
(b1eb5e6) guards idempotence; harness on railiance01 executes via the
issue-core sink. Rollback: enabled: false + workstation cron bridge.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

activity-definitions/binky-daily-rhythm.md

@@ -1,10 +1,10 @@
 ---
 id: binky-daily-rhythm
 name: Binky Daily Operating Rhythm
-enabled: false
+enabled: true
 owner: custodian-agent
 governance: custodian
-status: proposed
+status: active
 trigger:
   type: cron
   cron_expression: "23 8 * * 1-5"   # weekdays 08:23

activity-definitions/binky-weekly-mail-intake.md

@@ -1,10 +1,10 @@
 ---
 id: binky-weekly-mail-intake
 name: Binky Weekly Paper-Mail Intake Check
-enabled: false
+enabled: true
 owner: custodian-agent
 governance: custodian
-status: proposed
+status: active
 trigger:
   type: cron
   cron_expression: "37 9 * * 1"   # Monday 09:37

activity-definitions/binky-weekly-review-prep.md

@@ -1,10 +1,10 @@
 ---
 id: binky-weekly-review-prep
 name: Binky Weekly Founder Review Prep
-enabled: false
+enabled: true
 owner: custodian-agent
 governance: custodian
-status: proposed
+status: active
 trigger:
   type: cron
   cron_expression: "43 16 * * 5"   # Friday 16:43