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npub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7andWill Pfleger 277d8b02db feat(desktop): bring-your-own-harness (BYOH) generic ACP mechanism

Implement a generic BYOH mechanism that lets any ACP-speaking harness
(Cursor, Pi, Amp, OpenClaw, Hermes, etc.) work with Buzz without
maintaining separate backend code per harness type.

Backend (Rust):
- Add HarnessDefinition, HarnessSource, PRESET_HARNESSES (8 presets:
  cursor/omp/grok/opencode/kimi/amp/hermes/openclaw) + custom harness
  loading from ~/.config/buzz/custom-harnesses/
- warm_harness_registry_from_dir called at startup (before restore) and
  transactionally on save/delete; try_record_agent_command returns typed
  DANGLING_HARNESS_ID:<id> error — never silently falls to default
- Full descriptor resolved at spawn/readiness/spawn_hash paths; definition
  env merges below Buzz-reserved vars; edit round-trip carries definition_env
  in catalog entry
- All sweep paths (reap_dead_instance_agents, kill_stale_tracked_processes,
  receipt cleanup) use marker/receipt ownership — no name-gating
- save_custom_harness validates before mutation; atomic write + old-file
  delete on rename; preset ids reserved in check_id_collision
- buzz_sweep_owns_process cross-platform (no #[cfg(unix)] guard)

Frontend (TypeScript):
- Settings > Agents BYOH gallery: preset cards (Detected/Not-installed +
  docs link, no Add button), custom cards (full edit/delete)
- ArgsEditor (repeatable rows) + EnvEditor (KEY=VALUE pairs)
- HarnessManagementCard + harnessFormLogic.ts (21 behavior tests)
- harnessGalleryLogic.ts (11 tests: detected-first sort, preset filtering)
- Onboarding: actionable 'More harnesses...' button → Settings > Agents
- PRESET_LOGOS bundled map; avatarUrl stripped from all surfaces

Tests: +27 frontend / +20 Rust lib (registry lifecycle, env round-trip,
sweep ownership, legacy-JSON serde, preset collision)

Co-authored-by: Will Pfleger <pfleger.will@gmail.com>
Signed-off-by: Will Pfleger <pfleger.will@gmail.com>

2026-07-25 01:20:14 -04:00