feat: auto-refresh expired OAuth token for Claude Code PTY (story 405)

Detect authentication_failed errors from the Claude Code PTY stream
and automatically refresh the OAuth access token using the stored
refresh token in ~/.claude/.credentials.json.

- New module server/src/llm/oauth.rs: reads credentials, calls
  platform.claude.com/v1/oauth/token with JSON body, writes back
- PTY provider detects "error":"authentication_failed" via AtomicBool
- chat_stream retries once after successful refresh
- Clear error message if refresh also fails

On success the retry is transparent. On failure the user sees:
"OAuth session expired. Please run claude login to re-authenticate."

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

This commit is contained in:

Timmy

2026-03-26 19:58:04 +00:00

parent ab4ce2db92

commit 710b604b7c

4 changed files with 421 additions and 75 deletions

									
										server/src/llm/mod.rs
									
		+1
		
												View File
												
				@@ -1,4 +1,5 @@

				pub mod chat;

				pub mod oauth;

				pub mod prompts;

				pub mod providers;

				pub mod types;