Keep Customer.io SDK lifecycle serialized through timeouts

[benceruleanlu]

Behavior

Keep one owner of Customer.io SDK operations when a network call exceeds the UI's wait limit. Expired operations revoke display immediately and retain ownership until they settle; a later account cannot overtake an unfinished identify/reset. A late successful operation reconciles the latest eligible session from a reset.

Fetch source settings before SDK construction so a network failure can retry safely. After construction, retain the single initialization promise, await actual SDK readiness, and quarantine a partial initialization failure until document reload. In-app identity and route hooks check current eligibility, and route changes now participate in the serialized lifecycle.

Validation

16 focused controller/adapter tests passed, including delayed loading, identify/reset timeouts, stale sessions, offline retry, and overlapping dismissals. The regressions fail on the previous controller. Both real-SDK Electron fixtures passed for local ComfyUI and launcher under production CSP, including display, dismissal, account changes, and immediate input restoration on revocation. Required pre-commit typechecks, lint, and formatting passed.

Change breakdown

Changed lines = additions + deletions. No merge-only changes.

Category	Files	Added	Deleted	Share of changed lines
Test code	2	263	2	44.4%
Product code	3	212	120	55.6%
Total	5	475	122	100%

Test code paths

• src/renderer/src/customerIo/adapter.test.ts
• src/renderer/src/customerIo/controller.test.ts

Product code paths

• src/renderer/src/customerIo/adapter.ts
• src/renderer/src/customerIo/controller.ts
• src/renderer/src/customerIo/index.ts

No generated or vendored files changed.

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