refactor(runtime-fallback): decompose index.ts into focused modules

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Split 1021-line index.ts into 10 focused modules per project conventions.

New structure:

- error-classifier.ts: error analysis with dynamic status code extraction

- agent-resolver.ts: agent detection utilities

- fallback-state.ts: state management and cooldown logic

- fallback-models.ts: model resolution from config

- auto-retry.ts: retry helpers with mutual recursion support

- event-handler.ts: session lifecycle events

- message-update-handler.ts: message.updated event handling

- chat-message-handler.ts: chat message interception

- hook.ts: main factory with proper cleanup

- types.ts: updated with HookDeps interface

- index.ts: 2-line barrel re-export

Embedded fixes:

- Fix setInterval leak with .unref()

- Replace require() with ESM import

- Add log warning on invalid model format

- Update sessionLastAccess on normal traffic

- Make extractStatusCode dynamic from config

- Remove unused SessionErrorInfo type

All 61 tests pass without modification.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

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This commit is contained in:

Youngbin Kim

2026-02-17 16:29:52 -05:00

committed by YeonGyu-Kim

parent 22dda6178a

commit b6456faea8

11 changed files with 1106 additions and 1059 deletions

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src/hooks/runtime-fallback/index.ts

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