Codex/whe 15 bootstrap workspace (#1)

* feat(WHE-15): bootstrap bun workspace with app and package scaffolds

* chore(WHE-17): switch workspace typecheck to tsgo

* chore(WHE-16): configure oxlint and oxfmt no-semicolon style

* chore: address CodeRabbit review feedback

* chore: apply coderabbit fixes and add review script

* docs: add ADR decision metadata

docs/specs/HOUSEBOT-004-reminders-and-scheduler.md

@@ -1,22 +1,27 @@
 # HOUSEBOT-004: Reminders and Scheduler
 
 ## Summary
+
 Schedule and deliver household billing reminders to dedicated Telegram topics.
 
 ## Goals
+
 - Automate utility and rent reminders on configured dates.
 - Ensure idempotent sends and reliable retries.
 - Keep scheduling externalized via Cloud Scheduler.
 
 ## Non-goals
+
 - Dynamic natural-language reminder editing.
 - Per-user DM reminders in v1.
 
 ## Scope
+
 - In: scheduler endpoints, reminder generation, send guards.
 - Out: full statement rendering details.
 
 ## Interfaces and Contracts
+
 - HTTP endpoints triggered by Cloud Scheduler:
   - `/jobs/reminder/utilities`
   - `/jobs/reminder/rent-warning`
@@ -24,12 +29,14 @@ Schedule and deliver household billing reminders to dedicated Telegram topics.
 - Job payload includes cycle and household references.
 
 ## Domain Rules
+
 - Utilities reminder target: day 3 or 4 (configurable).
 - Rent warning target: day 17.
 - Rent due target: day 20.
 - Duplicate-send guard keyed by household + cycle + reminder type.
 
 ## Data Model Changes
+
 - `reminder_dispatch_log`:
   - `household_id`
   - `billing_cycle`
@@ -38,20 +45,24 @@ Schedule and deliver household billing reminders to dedicated Telegram topics.
   - `telegram_message_id`
 
 ## Security and Privacy
+
 - Scheduler endpoints protected by shared secret/auth header.
 - No sensitive data in scheduler payloads.
 
 ## Observability
+
 - Job execution logs with correlation IDs.
 - Success/failure counters per reminder type.
 - Alert on repeated send failures.
 
 ## Edge Cases and Failure Modes
+
 - Telegram API temporary failure.
 - Scheduler retry causes duplicate call.
 - Missing household topic mapping.
 
 ## Test Plan
+
 - Unit:
   - date and reminder eligibility logic
 - Integration:
@@ -60,10 +71,12 @@ Schedule and deliver household billing reminders to dedicated Telegram topics.
   - simulated month schedule through all reminder events
 
 ## Acceptance Criteria
+
 - [ ] Scheduler endpoints implemented and authenticated.
 - [ ] Reminder sends are idempotent.
 - [ ] Logs and counters available for each job run.
 - [ ] Retry behavior validated.
 
 ## Rollout Plan
+
 - Deploy with dry-run mode first, then enable live sends.