CLI Proxy API 6.6.1 አውርድ

Changelog
- 1da03bfe1512d6a2cc2d7ac2c2de088e1c42d41e Merge pull request #479 from router-for-me/claude
- a74ee3f3192aa00ba5821607d413067ab85f3f22 Merge pull request #481 from sususu98/fix/increase-buffer-size
- 2760989401c14dcd590ac416b7e3937765b68a60 Merge pull request #485 from router-for-me/think
- 564bcbaa542dc74bf7b6375a86831a16748c1926 Merge pull request #487 from router-for-me/amp
- 21bbceca0ce75e651f9dd0a29a681f2c580c661f docs(runtime): document reasoning effort precedence
- a03d514095c4f76d7d5bf986bd1e109854e2868f feat(registry): add thinking metadata for models
- 3ffd120ae9e9ce2bf34cc87c9994150ec4474ff6 feat(runtime): add thinking config normalization
- 88bdd25f06b773763a48f9f83f358d84eea57846 fix(amp): set status on claude stream errors
- a89514951f5676feed3594b1f806920e32507ebf fix(claude): prevent final events when no content streamed
- 76c563d161d7687519edfca710d71a01f00caee6 fix(executor): increase buffer size for stream scanners to 50MB across multiple executors
- 6285459c08e9f6f5996374085053892d2d5b91fa fix(runtime): unify claude thinking config resolution
- 3a81ab22fdb6c9b993fac1deef94785f8a8f5dbf fix(runtime): unify reasoning effort metadata overrides
- 519da2e04222641a412fb5c17a0bc2cf20428800 fix(runtime): validate reasoning effort levels
- f6300c72b790c6017a08ceacc425f9863907493d fix(runtime): validate thinking config in iflow and qwen
- 169f4295d041b0c2e1089d02073740c36f83e8bf fix(util): align reasoning effort handling with registry
- d06d0eab2f12af290453c17d8cb24e595792751a fix(util): centralize reasoning effort normalization
- 007572b58e2e6577f3c9a9a83d946e3b9c757437 fix(util): do not strip thinking suffix on registered models
- facfe7c518cb528426dcb82c7f927e4f151bea33 refactor(thinking): use bracket tags for thinking meta
- e79f65fd8efbac89e02e7d39d8bde89878178239 refactor(thinking): use parentheses for metadata suffix