## Summary
Fix credential detection bugs and add credential availability status to the API. Consolidate Claude fallback models and add `sonnet` alias.
Builds on #109 (OAuth token support).
Related issues:
- Fixes#117 (Claude, Codex not showing up in gigacode)
- Related to #113 (Default agent should be Claude Code)
## Changes
### Credential detection fixes
- **`agent-credentials/src/lib.rs`**: Fix `?` operator bug in `extract_claude_credentials` - now continues to next config path if one is missing instead of returning early
### API credential status
- **`sandbox-agent/src/router.rs`**: Add `credentialsAvailable` field to `AgentInfo` struct
- **`/v1/agents`** endpoint now reports whether each agent has valid credentials
### OpenCode provider improvements
- **`sandbox-agent/src/opencode_compat.rs`**: Build `connected` array based on actual credential availability, not just model presence
- Check provider-specific credentials for OpenCode groups (e.g., `opencode:anthropic` only connected if Anthropic creds available)
- Add logging when credential extraction fails in model cache building
### Fallback model consolidation
- Renamed `claude_oauth_fallback_models()` → `claude_fallback_models()` (used for all fallback cases, not just OAuth)
- Added `sonnet` to fallback models (confirmed working via headless CLI test)
- Added `codex_fallback_models()` for Codex when credentials missing
- Added comment explaining aliases work for both API and OAuth users
### Documentation
- **`docs/credentials.mdx`**: New reference doc covering credential sources, extraction behavior, and error handling
- Documents that extraction failures are silent (not errors)
- Documents that agents spawn without credential pre-validation
### Inspector UI
- **`AgentsTab.tsx`**: Added credential status pill showing "Authenticated" or "No Credentials"
## Error Handling Philosophy
- **Extraction failures are silent**: Missing/malformed config files don't error, just continue to next source
- **Agents spawn without credential validation**: No pre-flight auth check; agent's native error surfaces if credentials are missing
- **Fallback models for UI**: When credentials missing, show alias-based models so users can still configure sessions
## Validation
- Tested Claude Code model aliases via headless CLI:
- `claude --model default --print "say hi"` ✓
- `claude --model sonnet --print "say hi"` ✓
- `claude --model haiku --print "say hi"` ✓
- Build passes
- TypeScript types regenerated with `credentialsAvailable` field
* fix: fix bun install bug
* refactor: consolidate executable check into assertExecutable helper
- Add assertExecutable() to cli-shared that checks and attempts chmod
- Simplify CLI and SDK spawn code to use the shared helper
- Fix cli-shared package.json exports (.js not .mjs)
- Add global install instructions to SDK error message
* chore(release): update version to 0.1.6-rc.1
* fix: add cli-shared package to Dockerfiles
* chore(release): update version to 0.1.6-rc.1
* fix: add cli-shared publishing to release workflow
* chore(release): update version to 0.1.6-rc.1
* fix: handle already-exists error during crate publish
* chore(release): update version to 0.1.6-rc.1
* chore: remove inspect.sandboxagent.dev in favor of /ui/
* chore: add 404 page
* fix: correct inspector package name in Dockerfiles and add .dockerignore
- Change @anthropic-ai/sdk-inspector to @sandbox-agent/inspector in all Dockerfiles
- Add .dockerignore to exclude target/, node_modules/, etc from Docker context
The wrong package name caused pnpm install --filter to match nothing, so the
inspector frontend was never built, resulting in binaries without the /ui/ endpoint.
* chore: cargo fmt
* chore(release): update version to 0.1.4-rc.7
