Break up route-features into focused specs, add new changes

Archive the monolithic route-features spec and replace with 9 focused
OpenSpec changes: multi-day-routes, waypoint-notes (with POI snapping),
undo-redo, local-dev-stack, route-sharing, route-discovery,
activity-photos, osm-overlays, plus the existing changelog and
komoot-import.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

openspec/changes/local-dev-stack/proposal.md

@@ -0,0 +1,46 @@
+## Why
+
+There is no staging environment — production is the only deployed instance. Infra
+changes (Prometheus alerts, Caddy config, Grafana dashboards) go straight to prod
+with no way to validate them locally first. Meanwhile, CI E2E tests skip ~15 of
+20 tests because there is no PostgreSQL service in the workflow, and BRouter was
+only recently added to CI with manual setup instead of reusing the dev compose
+file. The existing `docker-compose.dev.yml` covers PostgreSQL and BRouter but
+nothing else from the production stack.
+
+## What Changes
+
+- Extend `docker-compose.dev.yml` with an optional monitoring profile
+  (Prometheus, Grafana, Loki) so developers can test observability changes
+  locally before deploying to production
+- Add `pg_stat_statements` and initialization scripts to the dev PostgreSQL
+  to match production config
+- Improve `scripts/dev.sh` with proper health checks and better error output
+- Simplify CI by using the same compose file instead of ad-hoc `docker run`
+  commands
+- Add a database seed script for consistent test data
+- Add a `pnpm dev:reset` command to tear down and recreate the local stack
+
+## Capabilities
+
+### New Capabilities
+
+- `local-monitoring`: Optional local Prometheus + Grafana + Loki stack via
+  `--profile monitoring`, matching production monitoring configuration
+- `dev-reset`: One command to wipe and recreate the local dev environment
+
+### Modified Capabilities
+
+- `local-dev-environment`: PostgreSQL config aligned with production
+  (pg_stat_statements, init scripts), improved health checks, seed data
+
+## Impact
+
+- **docker-compose.dev.yml**: Add monitoring services behind a profile, update
+  postgres config to match production
+- **.github/workflows/ci.yml**: Replace manual `docker run` with compose-based
+  service startup
+- **scripts/dev.sh**: Better health checks, error messages, optional monitoring
+- **scripts/reset-dev.sh**: New script to wipe volumes and restart
+- **scripts/seed.ts**: Test data for local development and E2E tests
+- **Dependencies**: None new (all Docker images already used in production)