Add worklog: ops-review completion and bot research

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/worklogs/2026-01-15-ops-review-completion-bot-research.org

@@ -0,0 +1,94 @@
+#+TITLE: Ops Review Completion and Bot Research
+#+DATE: 2026-01-15
+#+KEYWORDS: ops-review, backup, resilience, spotify, odesli, slack-bot
+#+COMMITS: 2
+#+COMPRESSION_STATUS: uncompressed
+
+* Session Summary
+** Date: 2026-01-15
+** Focus Area: Complete ops-review fixes, research Slack bot options
+
+* Accomplishments
+- [X] Completed MED ops-review fixes from previous session
+- [X] Added backup-b2-failed notification service with OnFailure handlers
+- [X] Added network-online.target dependency to backup-b2-check
+- [X] Added TimeoutStartSec to backup services (2h backup, 1h check)
+- [X] Deployed backup module changes (generation 73)
+- [X] Verified system health post-upgrade: all 6 services active
+- [X] Analyzed LOW findings (statix W20) - skipped as style-only
+- [X] Closed y8le: accepted RocksDB backup consistency risk
+- [X] Updated previous session worklog with ops-review details
+- [X] Researched Spotify bot options (idonthavespotify, Odesli API)
+- [X] Located previous musiclink research in session history
+
+* Key Decisions
+** Decision 1: Skip statix W20 warnings
+- Context: Ops-review flagged repeated keys in Nix modules
+- Options considered:
+  1. Refactor to consolidate systemd.services blocks
+  2. Skip - it's idiomatic NixOS module style
+- Rationale: Current pattern (one service per block) is common in nixpkgs and more readable
+- Impact: No changes; accepted as style preference
+
+** Decision 2: Accept RocksDB backup risk (y8le)
+- Context: Matrix-continuwuity uses RocksDB, backed up while running
+- Options considered:
+  1. Stop service during backup (~30s downtime at 3 AM)
+  2. Accept risk - RocksDB has crash consistency
+- Rationale: Low traffic at 3 AM, multiple daily snapshots provide redundancy
+- Impact: Closed y8le; will re-evaluate if restore drill shows corruption
+
+** Decision 3: Defer Slack bot work
+- Context: Researched building Spotify link converter bot
+- Options considered:
+  1. Build new Go bot using Odesli API
+  2. Wait for musiclink team's implementation
+- Rationale: Another team already has musiclink project in progress
+- Impact: No new bot work; wait to see how their implementation turns out
+
+* Technical Details
+
+** Odesli API Research
+Found from previous session research:
+- Endpoint: ~GET https://api.song.link/v1-alpha.1/links?url=<encoded-url>~
+- Auth: None required (API key optional for higher limits)
+- Rate limits: 10 req/min (free) / 60 req/min (with key)
+- Platforms: Spotify, YouTube Music, Apple Music, Tidal, Deezer, SoundCloud, etc.
+
+Previous conclusion: Odesli is simpler than idonthavespotify (which still needs Spotify creds).
+
+** System Health Check
+Post-upgrade verification:
+- All 6 services active (postgresql, forgejo, matrix-continuwuity, mautrix-slack, maubot, nginx)
+- No failed units
+- Disk: 68% used (16G free)
+- Memory: 506Mi / 1.9Gi (no swap)
+- SSH noise from brute force attempts (normal internet background radiation)
+
+* Process and Workflow
+
+** What Worked Well
+- Session history search found previous research quickly
+- Incremental ops-review fix + deploy cycle was smooth
+
+** What Was Challenging
+- Locating previous Spotify/Odesli research required jsonl grep
+
+* Context for Future Work
+
+** Open Questions
+- How will musiclink team's bot turn out?
+- Should we revisit Slack bot after seeing their implementation?
+
+** Next Steps
+- Monitor musiclink team progress
+- Continue with P2 research items or housekeeping when ready
+
+* Beads Activity
+- Closed: y8le (RocksDB backup risk - accepted)
+
+* Session Metrics
+- Commits made: 2
+- Deployment: generation 73
+- Research: Odesli API, musiclink history
+- Decision: defer bot work to other team