Updated the shared Tyrell project index after the R7 environmental rollback, recording exact verified Build 15/17 recovery, resolved rollback-harness bug, and the inert R8 preparation state.

Detailed changelog

Scope

• Host performing the documentation change: rdmpw3275m.
• Shared file changed: /Users/richh/Library/Mobile Documents/com~apple~CloudDocs/Codex/projects/AGENTS.md principles/PROJECTS.md.
• Project entry changed: Tyrell only.
• No Tyrell source, app, daemon, database, credential, or provider session was changed by this index update.

Change

• Replaced the earlier R7-live checkpoint with the verified R7 environmental-interruption state.
• Recorded that the lid closed before the short gate, all R7 clocks are void, and there was no Build 20 product rejection.
• Recorded exact Build 15/17 rollback verification and the successful actual failure-path evidence that resolved ISSUE-20260913-09.
• Recorded the complete canonical R7 preservation manifest and receipt.
• Recorded fresh R8 state and prior hashes and its PREPARED_NOT_INSTALLED_OR_LAUNCHED boundary while the canary remains AC/closed.
• Retained the prohibition on fleet expansion until a future uninterrupted run passes every acceptance gate.

Commands and verification

• Read raw R7 state, samples, guard log, boundary captures, installer log, signatures, launchd state, APIs, live database, power state, and process cardinality.
• Recomputed 35-sample continuity and identity evidence from the raw JSONL.
• Compared the entire canary R7 stage with its canonical copy: 53 files, 30 directories, zero symlinks, 275,044,293 bytes, identical recursive manifest SHA-256 9484defa0c7af92a64bfe4fe23e08aba5e35a501f9da076fb274a6400f9bd424.
• Prepared and validated inert R8 state SHA-256 267db531e1472b2a99c2dd6f1c32be5af68e9f2689509053413116532f7d0a55 and prior metadata SHA-256 0ebb8ef0d751548e458d7828141cf7ec8eb078aad8905a23676b760c198a8be6.
• Applied the project-index replacement with the required patch mechanism and re-read the unique anchored Tyrell line.

Backups and durable evidence

• Canonical receipt: rdmsm4x:/Users/richh/dev/_handoff/tyrell-build20-memory-20260912/canary-r7-lid-closure-20260913-2152/README.md, SHA-256 c30634606b320e8406e0cf609c076314a0119aa6a2368b0a3867c724b3b06748.
• The complete R7 stage remains on both the canary and canonical hub.
• R8 retains a complete exact Build 15/17 rollback payload.
• No evidence or user data was deleted.

Undo

If only the shared documentation needs to be reverted, restore the immediately prior Tyrell line from iCloud version history. Do not change the verified runtime, R7 evidence, R8 stage, or live database to undo documentation.

Outstanding work

• Physically open the rdmbair15m5 lid while it remains on AC.
• Require two fresh AC/open readings and the complete R8 launch preflight.
• Restart every acceptance clock from the next actual Build 20 daemon start.
• No fleet expansion until all memory, inventory, CPU, fresh-app, and controlled-reboot gates pass.