Add admin-gated GLM video research and inspection API

[devhims]

Adds an asynchronous video agent API for topic research and single-video inspection. Authenticated callers can start idempotent runs, poll results, and restore or search conversation history. GLM powers routing, the agent loop, transcript analysis, and isolated storyboard analysis.

The endpoint ships behind AGENT_RUNTIME_ENABLED and AGENT_ACCESS_MODE=admins. Admin access checks the authenticated account's current verified email against ADMIN_EMAILS_SECRET, including for API-key callers. Setting the access mode to all enables a later rollout to authenticated users.

• Persist runs, evidence, citations, conversation branches, and recovery checkpoints in Durable Objects. Enforce a 60-second admission deadline with 20 seconds reserved for finalization, bounded tool/model budgets, and one research search.
• Add storyboard extraction to the processor and visual analysis to both capabilities. Validate final citations against persisted evidence and return qualified partial answers when sufficient evidence survives a model failure.
• Reserve 22 credits before inference, settle completed evidence once, and refund unused credits on terminal outcomes. Recover interrupted settlement without double charging.
• Cancel runs and clear agent data during account deletion. Register conversations before starting work and retain deletion tombstones to block late writes.
• Add local Worker smoke testing, regression tests, API documentation, and architecture references. Remove nonessential author email fields from package metadata.

Validation:

• 332 automated tests passed across platform unit, Durable Object, D1 credit, and processor suites.
• TypeScript, generated-documentation, and whitespace checks passed.
• Live GLM research: 52.3 seconds, 9 citations, 4 credits charged.
• Live GLM inspection: 26.5 seconds, 11 citations, transcript and storyboard evidence, 3 credits charged.
• Verified the matching reserve and settlement entries in local D1.

The live non-admin check was skipped without a second token; automated access-control tests passed. No endpoint deployment was performed. Deployment requires the ADMIN_EMAILS_SECRET binding and the configured Durable Object migrations.

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Project	Deployment	Actions	Updated
video2ctx-web	Ready	Preview	Sep 5, 2026 10:02am UTC

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Project	Status	Preview	Updated
video2ctx	🟢 Ready	View Preview	Sep 5, 2026, 10:02 AM

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[devhims]

Superseded by #19, which presents the same reviewed code as six focused commits on feat/video-agent-api.