[andre487]

Manual Firefox tab routing could silently revert after a background restart, CLI updates could fail after rate-limit backoff, and Chromium's early startup request cache could keep growing after tabs closed.

• Persist manual tab overrides in storage.session with the routing configuration they belong to. Restore only open tabs with matching rules, preserve overrides across unrelated sync updates, and remove them on tab close or routing changes. A failed session write leaves the live override unchanged.
• Add per-attempt timeout support to the shared HTTP retry helper and use it for identity, schema, catalog and GOST downloads. Explicit caller cancellation remains effective.
• Limit early Chromium request evidence to 256 tab/host pairs, retain only origins instead of full URLs, remove closed-tab entries, and persist initialization so worker recreation does not restart collection.
• Add regression coverage for all three problems.

Validation: lint and build passed; all 205 unit tests passed. Browser tests excluding Docker/MegaProxyServer: 231 passed, 14 skipped, one Chromium scenario failed with ERR_SSL_PROTOCOL_ERROR while opening the local HTTPS fixture before proxy activation; that scenario then passed three consecutive runs without changes. MegaProxyServer tests could not run locally because the Docker daemon is unavailable.

Installation archives

• Chromium ZIP
• Firefox ZIP

Build: 4316905 · archives: success.
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