# progress

## 2026-06-10 — Phase 2: health + failover chain, proven

**Landed:** the full deterministic failover test matrix over the fake
provider + fake clock (no sleeps, no network): single-transient recovery
via same-target retry; repeated transients bench + advance; cooldown expiry
re-admits and success resets; backoff doubling across bench rounds;
mixed chain with an inline-expanded alias element failing over through the
expanded targets; permanent-policy default (fail-fast on auth) and
`AdvanceOnPermanent` override; `TransientRetries` disabled/custom; retry
loop stops early when the tracker benches mid-request; exhaustion error
lists skipped-while-benched targets; custom classifier override; chain-of-
one gets identical semantics; HTTP 529 fails over. Implementation needed no
changes — Phase 1's executor held up.

**Next:** Phase 3 — OpenAI/Anthropic/Ollama/foreman REST clients + media
pipeline.

## 2026-06-10 — Phase 1: foundations, ADRs, skeleton, docs

**Landed:**
- Module scaffold (Go 1.26), `.gitea/workflows/ci.yaml` (foreman-style
  gates: build, vet, race tests, tidy-diff), `.env.example`.
- `llm/` canonical contract: Message/Part (sealed; text+image),
  Request/Options, Response/Usage/FinishReason, Stream/StreamEvent,
  Tool/Toolbox (panic-safe Execute), Capabilities (zero-value semantics),
  Model/Provider interfaces, APIError + transient/permanent Classify.
- `health/`: clock-injected tracker — consecutive-failure threshold,
  exponential capped cooldown, reset-on-success, thread-safe; full
  deterministic test suite (fake clock).
- Root: Registry (providers/aliases/schemes/health), Parse with the binding
  grammar (verbatim model ids, inline recursive alias expansion, cycle
  detection, dedup), LLM_* env-DSN loading (go-llm-parity lazy fallback +
  eager LoadEnv/New scan), chain executor implementing Model
  (retry-on-transient, bench-on-repeat, skip-benched, 404-advance,
  fail-fast-on-auth, joined exhaustion errors). Built-ins register as
  resolvable stubs until their phases land.
- `provider/fake/`: scriptable provider (per-model outcome queues, request
  recording, capabilities overrides, streaming) — the hermetic test rig.
- ADRs 0001–0008 + index; CLAUDE.md; honest README with pending-marked
  matrix.
- Tests cover the two required cases: the trailing-`thinking` chain parse
  and `LLM_M1=foreman://token@host` loading (plus DSN table, lazy fallback,
  cycle detection, chain failover/backoff/exhaustion, toolbox execution,
  error classification).

**Notes:** chain executor landed in Phase 1 (design was settled);
Phase 2 deepens its test matrix (cooldown re-admission via fake clock,
alias-in-chain failover, permanent-policy override) and wires anything the
tests flush out.

**Next:** Phase 2 — exhaustive health/chain test matrix.