Tighten TypeScript strictness across renderer and main

[beNative]

Summary

• enable stricter TypeScript compiler options and add module shims for Vite and better-sqlite3
• resolve strict null/optional typing issues across renderer components, hooks, and repository services
• harden preview renderers and database flows while recording the passing typecheck in the consolidation QA log

Testing

• npx tsc --noEmit

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https://chatgpt.com/codex/tasks/task_e_68f71ef0b0448332ac72456ffa19147c

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Preserve GitHubProvider instance when falling back

The override stores originalGetLatestTagName as gitHubProviderPrototype.getLatestTagName.bind(GitHubProvider.prototype). Because the function is already bound to the prototype, the later originalGetLatestTagName.call(this, …) ignores the instance this and executes with this === GitHubProvider.prototype, so this.options and this.httpRequest are undefined. Whenever both GitHub REST calls fail and the fallback is invoked, the updater will now throw before returning a tag name, breaking auto-update checks in offline or error scenarios. Store the unbound method instead so call(this) preserves the instance context.

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