- Replaced `process.chdir(tempDir)` plus `PI_REQ_DEBUG=1` auto-naming with explicit `setNextRequestDebugPath` targets, removing the `previousCwd` save/restore and the `debugFiles` directory-scan helper.
- The PI_REQ_DEBUG recording assertions now read each request/response from the path they set, so the test no longer mutates `process.cwd()` or the global debug env flag.
- Added explicit request-debug path helpers in `packages/ai/src/utils/request-debug.ts` for one-shot dumps.
- Added `/debug dump-next-request`, `/debug dump-request`, and `/debug next-request` subcommands to arm next-request dumps.
- Changed `debug` handling in `packages/coding-agent/src/slash-commands/builtin-registry.ts` to execute args instead of always opening selector.
- Fixed explicit request-debug mode to resolve `~`/relative paths and create parent directories before logging.
- Fixed one-shot request-debug mode to consume its target after one call and overwrite existing response logs.
- Centralized catalog and registry handling on `ModelSpec` and `buildModel`, resolving compatibility at model build time.
- Removed runtime compatibility detectors and switched provider request flows to direct `model.compat` reads.
- Added compat fields (`supportsReasoningParams`, `alwaysSendMaxTokens`, `strictResponsesPairing`, `whenThinking`).
- Persisted explicit compatibility overrides through `compatConfig` in discovery and cache merge paths.
- Added optional FetchImpl fields to compaction, proxy, AI, coding-agent, and mnemopi options.
- Threaded injected fetch implementations through OAuth, discovery, and search/LLM request flows.
- Removed exported hookFetch utility and its package entrypoint from utils.
- Replaced global-fetch test monkeypatching with per-test FetchImpl mocks across test suites.
- Added `wrapFetchForRequestDebug` to intercept fetch calls and write `rr-session-N.json` (request) and `rr-session-N.res.log` (response headers + raw body) when `PI_REQ_DEBUG=1`.
- Integrated debug fetch wrapping into `stream` and `streamSimple` entry points so all providers inherit recording automatically.
- Extended Cursor HTTP/2 and Codex WebSocket transports with explicit debug session hooks for non-fetch protocols.
- Added `fetch` field propagation through `mapOptionsForApi` and Bedrock options so the wrapped fetch reaches every provider.
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