Implement the Protocol v1 P0-P2 roadmap

[JacobLinCool]

Summary

• finalize the language-neutral Protocol v1 contract and cross-language conformance corpus
• add the durable Android upload outbox, immutable signed join links, and local randomized EMA windows
• add the R2-only ciphertext receiver and offline adc-analysis verification, reassembly, and typed Parquet pipeline
• add battery, temporal context, gyroscope, ambient light, and proximity collectors
• remove the superseded audit/evidence release gates and all AWARE comparison artifacts

Trust boundaries

• the receiver is R2-only: no decryption, database, queue, dashboard, remote control, or participant-authenticity claim
• Protocol v1 is replaced directly; no legacy-v1 compatibility or v2 fallback is retained
• hosted web-task content remains the sole explicitly bounded mutable remote-content exception

Validation

• Android: full unit tests, lint, debug/release assembly (1,390 Gradle tasks)
• Protocol: Kotlin shared-vector conformance plus canonical vector validation
• Web: type/check, 202 tests, production build
• Receiver: typecheck, 35 unit tests, 2 workerd tests, Wrangler dry-run build
• Analysis: Ruff and 32 tests
• Repository tools: catalog/parity/vector validation, collector assurance, 20 tool tests, actionlint, diff checks
• final Jacob checkpoint: PASS

Release

Prepares v1.0.0-rc.3; the tag will be created from merged main only after all PR checks pass.

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