Compile errors confirmed: `Backoff` field/method collision in retry.go, and `Attempts` method used as a value in redmine.go. Let me survey the loop, config, and existing tests before fixing.Now let me look at the loop state, gate, and remaining files to understand the full picture:Now let me examine the brief package (Part 3 surface), go.mod, and the conductor wiring:Let me check the spec doc for the briefing format and the existing tests:I have the full picture now. Starting with the environment chore commit, then Part 1. Let me check the example config first:Committing the environment fix first, then Part 1:Now Part 1 — fixing the compile errors. First the config fields:Now fix retry.go (rename method) and redmine.go (Attempts call + verification re-read):Now redmine.go — fix the `attempts`/`Backoff` usage and add the `IssueState` verification re-read:Compile fixed. Now completing the 525 feature — park-on-failure, heartbeat error surfacing, and retry logging:Now heartbeat — add `parked` counter and `last_writeback_error`:Now the daemon dispatchTask writeback tail — note → status → verify re-read, park on final failure:Let me refine `Retryable` in retry.go — transport errors should retry regardless of the legacy `Temporary()` verdict:Now the tests — retry policy tests first:Now the writeback retry tests against a fake server (502-then-success, exhaustion, non-retryable, verify re-read):The fake Redmine GET handler must now return the status name (the verify re-read needs it). Updating the daemon test fake and adding the park tests:That edit was wrong — it clobbered the function body. Let me inspect and repair:Two issues: the defaults test needs `config.Default()` (zero-value literal has retries=0 by design), and the notify WIP breaks `./...` builds — I'll minimally unbreak it now and rewrite it fully in Part 2. Checking testConfig first:Now the minimal notify unbreak (full rewrite comes in Part 2):All green. Updating the example config and README for 525:Now the full check gate for Part 1:Check green. Committing Part 1 (525):525 pushed. Now Part 2 — the native notifier. Full rewrite of `internal/notify` plus `[notify]` config:Now the full notifier rewrite:Now wire the notifier into the loop daemon:Let me harden `send` with proper deadlines (smtp.SendMail has none — a black-holed host would stall the loop):Now the remaining event wiring — turn complete/failed, park, quota defer, and a bounded stop-event context:Pre-existing gofmt drift across the repo — let me check whether my edits introduced new deviations:Build passes. Now the notify tests with a local fake SMTP server:Now the loop-level wiring test and config tests:Two events queue (daemon_start + turn_complete) — correct behavior. Fixing the assertion:Now docs — example config, README, CLI usage:Check green. Committing Part 2 (522) and pushing:Part 3 — 495 briefing pipeline. Reading the existing brief tests for fake-server patterns:Full picture acquired. Implementing Part 3 — config additions first:Now the sources — open-issue tables, decisions-needed, system health: