Cordia dispatch recovery and agent discovery.

Fixed Cordia app setup recovery by retrying failed bootstrap dispatches, reusing known generated repos, normalizing billing-required failures, and keeping recoverable Hub dispatch failures retryable.

Fixed generated project image serving for managed apps so stored project images continue to show through app setup and worker responses.

Improved Cordia admin diagnostics by surfacing dispatch failure details for operators while hiding unconfirmed GitHub metadata and system internals from public project responses.

Updated Hub release dispatches to use repos, reviewers, and prompt payloads, added a contract probe workflow, and kept release reviewers attached to generated app tasks.

Strengthened generated app storage prompts and AGENTS guidance so future app work uses server-side Pages Functions and R2 bindings without exposing storage credentials.

Added agent-readable discovery metadata with a well-known API catalog, public agent skill index, auth documentation, and link headers for llms.txt and llms-full.txt.

Added Markdown negotiation for the homepage and clarified public-site auth metadata so agents see crawling as token-free without advertising the app shell as an OAuth server.

Fixed duplicate task handling so reviewer lists and requested PR reviewers are part of task dedupe keys, preventing tasks for different reviewers from being collapsed together.

Kept reviewer metadata in broker snapshots, rejected submissions, and completed-history grouping so dashboard history shows reviewer-specific task records.