Task: Finalize native display integration

Identity

Promote the completed native Android display task into canonical project memory from product commit 50ac5bddc4f747b88064051f9038fa026280ab4b.
Verify the integrated source, canonical decisions, architecture, domain rules, evidence pointers, follow-up commitments, build output, and repository state.
Obtain an independent read-only final review and push the resulting main branch to origin.

Integration worktree and lock are exclusively owned by this task.
Source task records/evidence are read-only at this base.
Canonical updates must preserve confirmed behavior and distinguish target-device acceptance gaps from completed host verification.
No new product behavior is introduced by this documentation/push task.

Promoted project positioning, completion criteria, two accepted Android decisions, system/module/data-flow architecture, integrated state/history, durable business rules/glossary, evidence/reflection indexes, commitments, and known missing context.
Full local verification, APK integrity checks, canonical-memory audit, independent final review, and documentation ownership gate passed. The documentation commit and remote push are the remaining mechanical handoff steps.

Verified source commit 50ac5bddc4f747b88064051f9038fa026280ab4b is present on local main.
Confirmed this task's base is that source commit, so the historical source records are unchanged during canonical promotion.
Android: clean testDebugUnitTest lintDebug assembleDebug passed; 56 tests, zero failures/errors/skips, zero lint errors.
Web: 18 test files / 66 tests passed; typecheck and production build passed.
Server: go test ./..., go vet ./..., and go build ./... passed.
APK metadata: package cn.nianxx.queue.display, versionCode 9, versionName 1.5.2, minSdk 23, targetSdk 36; v1/v2 signature verification passed.
Build APK, deliverable APK, and declared checksum all match SHA-256 0D56C10B8CE706893F3EA8E59B21329847517F56F7347ABEA127AB30C6C71D77.
check_project_docs.py passed and check_doc_drift.py --task-id 20260812-finalize-native-display-7c23e18a passed before independent review.
Canonical-memory audit corrected two overbroad statements (ticket calling is "up to N" and the current web client polls rather than consuming SSE), narrowed mutation guarantees to implemented endpoint contracts, and recorded privacy-retention/session rules plus the unregistered transition/reissue source paths.
Independent final integration review: PASS; no actionable P0/P1 blocker.

Target-TV field acceptance, production signing, legacy audio-rights confirmation, and targetSdk 37 landscape revalidation are recorded in canonical commitments.

None. This Integration task applies the accepted promotion candidates directly to canonical memory.