Implement Edge Cookie identity system with KV graph and integration tests#621

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ChristianPavilonis wants to merge 36 commits intomainfrom

feature/edge-cookies-final

Commits on Apr 7, 2026

Rename Synthetic ID to Edge Cookie (EC) and simplify generation
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Fix CI: remove re-introduced placeholder secret validation tests
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Add EC module with lifecycle management, consent gating, and config migration
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Add KV identity graph with CAS concurrency control
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Add partner registry and admin registration endpoint
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Centralize EC lifecycle finalization in middleware
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Add EC sync and identify endpoints
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Decorate auction bidstream with partner EIDs from KV identity graph
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Add authenticated S2S batch sync endpoint
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Add background pull-sync dispatch for organic routes
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Add EC lifecycle integration test scenarios
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Deduplicate EC helpers, fix error variants, and improve documentation
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Fix 8 EC spec deviations identified in branch audit
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Harden EC endpoints: input validation, binary-search EIDs encoding, and cleanup
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Fix post-rebase compilation: restore missing methods, imports, and error variants
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Restore iframe creative rendering accidentally reverted by EC migration
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Restrict EC generation to document navigations to prevent consent bypass
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Migrate admin endpoints to /_ts/admin namespace
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Migrate batch sync API to /_ts/api/v1/sync namespace
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Refresh EC header and cookie on returning requests
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Add end-to-end EC setup and API documentation
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Use full EC IDs for identity graph keys
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docs: update EC spec to reflect full EC ID used as KV key
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Add ASN/DMA geo fields and publisher domain tracking to EC KV schema
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Add network cluster evaluation to EC identify endpoint
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Add device signal derivation and bot gate for EC identity graph
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Update EC technical spec with schema extensions, device signals, and bot gate
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Replace bot gate allowlist with signal-presence check
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Backfill pub_properties on update_last_seen for pre-existing entries
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Namespace new Edge Cookie endpoints under versioned routes
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Fix Prebid bidder duplication and blank auction EC header
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Fix EC review findings: error handling, docs, dead code, and UID limit consistency
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Fix post-rebase compilation: reconcile platform abstraction with EC module
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Truncate EC IDs in log output to satisfy CodeQL sensitive data rule
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Commits on Apr 9, 2026

Harden EC module: fix cleartext logging, input validation, security, and code quality
ChristianPavilonis
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Commits on Apr 10, 2026

Address all blocking PR review findings from aram356 and prk-Jr
ChristianPavilonis
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