- auth.rs: AuthRecord (OAuth {access, refresh, expires} | Api {key}) with
is_expired(now, skew) honoring expires==0 = never; AuthStorage keyed by
provider id over ~/.local/share/ai-harness/auth.json.
- Read-modify-write on every op so concurrent refresh/login don't clobber;
writes go through a temp-file rename set to 0600 (unix) to avoid truncated
auth files.
- 6 tempdir tests: missing→empty, set/get/overwrite, multi-provider coexist,
scoped remove (+ no-op on absent), expiry skew/never, 0600 perms.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
/v1/messages request builder (cache_control breakpoints on the first 2
system blocks + last 2 messages, tool schema -> input_schema, extended
thinking budget) and an SSE decoder built on eventsource-stream, mapping
content_block_start/delta/stop and message_delta into our normalized
LlmEvent stream (text, thinking+signature, streamed tool-call JSON
accumulated and parsed at content_block_stop, usage merged from
message_start + message_delta). AnthropicProvider wires this to reqwest
with x-api-key/anthropic-version/anthropic-beta headers and classifies
HTTP errors into RateLimited/Auth/Overloaded/Http. ProviderRegistry
resolves "provider/model" strings.
Also tightened processor::process_step's cancellation: the event loop now
selects the stream poll against ctx.cancel instead of only checking at the
top of the loop, so a blocked provider stream is actually interrupted by
abort (matches docs/02-engine.md's cancellation semantics).
127 tests passing, clippy clean.
Seven-crate workspace per docs/01-architecture.md. harness-core gets the
domain types (Session/Message/Part/ToolState), a broadcast EventBus, the
last-match-wins wildcard permission evaluator, and a SQLite storage actor
(dedicated thread + mpsc, JSON-blob rows) with roundtrip tests. All other
crates are compiling stubs. CI runs fmt/clippy -D warnings/test.