* feat(auth): add downstream api key support

* feat(auth): harden api key security

* fix(auth): refine api key parsing

* chore(responses): align review feedback

* feat(proxy): improve upstream parity across chat responses messages models and transport

* fix(openai): align copilot request shapes

* fix(messages): align anthropic request translation with copilot

* fix(requests): close remaining request-shape parity gaps

* fix(messages): use model capabilities for token field normalization

* fix(messages): request reasoning fields for anthropic thinking

* fix(messages): route claude thinking through messages api

* fix(messages): normalize claude thinking budget

* fix(messages): forward anthropic context management beta

* fix(messages): normalize anthropic cache control

…ames (#6)

- add Claude-specific alias generation for family and version-based names
- update public model listing expectations for resolved Claude aliases
- add route coverage for Claude family aliases hitting the messages api

- remove display-name-derived Claude aliases from the public model list
- remove version-compacted Claude aliases that polluted /v1/models
- keep canonical ids and family aliases for clean model resolution

* fix(server): disable Bun idleTimeout to prevent SSE stream disconnection during LLM inference

* fix(messages): filter [DONE] terminator and strip extra fields from assistant messages