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docs: archive legacy guides and streamline copilot instructions governance

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Olaf
2026-04-01 08:37:50 +00:00
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TECH-CHANGELOG.md
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This changelog documents technical and developer-relevant changes included in public releases. For development workspace changes, see DEV-CHANGELOG.md. Not all changes here are reflected in the user-facing changelog (`program-info.json`), and not all UI/feature changes are repeated here. Some changes (e.g., backend refactoring, API adjustments, infrastructure, developer tooling, or internal logic) may only appear in TECH-CHANGELOG.md. For UI/feature changes, see `dashboard/public/program-info.json`.
## 2026.1.0-alpha.15 (2026-03-31)
- 🔌 **TV Power Intent Phase 1 (server-side)**:
- Scheduler now publishes retained QoS1 group-level intents to `infoscreen/groups/{group_id}/power/intent`.
- Implemented deterministic intent computation helpers in `scheduler/db_utils.py` (`compute_group_power_intent_basis`, `build_group_power_intent_body`, `compute_group_power_intent_fingerprint`).
- Implemented transition + heartbeat semantics in `scheduler/scheduler.py`: stable `intent_id` on heartbeat; new `intent_id` only on semantic transition.
- Added startup publish and MQTT reconnect republish behavior for retained intent continuity.
- Added poll-based expiry rule: `expires_at = issued_at + max(3 × poll_interval_sec, 90s)`.
- Added scheduler tests and canary validation artifacts: `scheduler/test_power_intent_utils.py`, `scheduler/test_power_intent_scheduler.py`, `test_power_intent_canary.py`, and `TV_POWER_CANARY_VALIDATION_CHECKLIST.md`.
- 🗃️ **Holiday data model scoping to academic periods**:
- Added period scoping for holidays via `SchoolHoliday.academic_period_id` (FK to academic periods) in `models/models.py`.
- Added Alembic migration `f3c4d5e6a7b8_scope_school_holidays_to_academic_.py` to introduce FK/index/constraint updates for period-aware holiday storage.