Cherry-picked from PR #2816 onto current upstream/main, resolving
conflicts from PR #3015's merge (which added retry_after to ApiError
but some construction sites were missing it).
Commits preserved:
- ade85398: API timeout config, Retry-After header, configurable retry
- TimeoutConfig in HTTP client builder (connect 30s, request 5min)
- CLAW_API_CONNECT_TIMEOUT and CLAW_API_REQUEST_TIMEOUT env vars
- Retry-After header parsing on 429 responses
- ApiTimeoutConfig in runtime config (settings.json)
- 8a883430: retry 400 responses with transient gateway error bodies
- Detects known gateway phrases in 400 response bodies
- Marks them as retryable instead of hard-failing
- ed91a61e: add 'no parseable body' to CONTEXT_WINDOW_ERROR_MARKERS
- Some providers return 400 with 'no parseable body' for oversized
requests instead of a proper context_length_exceeded error
Commits skipped (already in upstream via PR #3015):
- 453ab642: optional id field (already merged)
- baa8d1ba: HTML detection in streaming (already merged)
- 33d2f789: JSON error detection in streaming (already merged)
8 files changed, 299 insertions, 80 deletions