* share GitHub rate limit tracking between the action and the worker
The action now counts all GitHub API requests and captures the latest
`x-ratelimit-remaining`/`x-ratelimit-reset` headers via a global
request hook on every Octokit instance.
On exit, the usage summary is written atomically to a path specified
by `PULLFROG_USAGE_SUMMARY_PATH`. The worker sets this env var before
sandbox execution, reads the file afterward, and feeds the data into
the Durable Object's rate limit state.
This closes the visibility gap where the worker had no insight into
API calls made by the sandboxed action process.
* address review: refactor rate limit state, randomize usage summary path
* track actual rate limit cost using x-ratelimit-remaining delta
* refactor usage summary writing to use onExitSignal API
Replace the monolithic registerUsageSummaryHandler with direct use of
onExitSignal in main.ts and a writeGitHubUsageSummaryToFile utility
in github.ts. This keeps exitHandler.ts as a pure signal handler
registry (from #299) and also writes the summary on normal exit.
* tweak
* unify
* deduplicate stuff
* improve error handling
---------
Co-authored-by: pullfrog[bot] <226033991+pullfrog[bot]@users.noreply.github.com>
Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>
pullfrog[bot]
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