gHashTag · gHashTag · May 15, 2026
diff --git a/docs/RVR_018_DR_T0_REHEARSAL.md b/docs/RVR_018_DR_T0_REHEARSAL.md
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+# RVR-018-DR-T0-REHEARSAL — T-0 Ceremony Dry-Run Rehearsal Report
+
+**Document ID:** RVR-018-DR-T0-REHEARSAL  
+**Mission:** Syntactic + semantic dry-run validation of `t0_ceremony.sh` before live execution at T-0 (2026-05-17 22:00 UTC)  
+**Date:** 2026-05-16  
+**Author:** Vasilev Dmitrii \<admin@t27.ai\>  
+**Anchor:** `phi^2 + phi^-2 = 3 · QUANTUM BRAIN 1:1 SILICON · DOI 10.5281/zenodo.19227877 · NEVER STOP`  
+**Repo:** [gHashTag/tt-trinity-gf16](https://github.com/gHashTag/tt-trinity-gf16)  
+**EPIC:** [gHashTag/trinity-fpga#61](https://github.com/gHashTag/trinity-fpga/issues/61)  
+**R5 HONEST** — all findings reported as-observed; nothing patched silently.
+
+---
+
+## T-Counter
+
+| Clock | Value |
+|-------|-------|
+| T-0 (live execution target) | 2026-05-17 22:00 UTC |
+| Rehearsal timestamp | 2026-05-16 (T-29h window) |
+| Stage | **DRY-RUN REHEARSAL** — zero live state changes |
+
+---
+
+## §1 — Script Inventory (Step 1)
+
+### Search Scope
+
+All branches enumerated in `gHashTag/tt-trinity-gf16` via `git/refs/heads` API (33 branches including `prep/t0-ceremony-runbook`, `main`, all `feat/*` branches). Fallback repo `gHashTag/trinity-fpga` also searched. GitHub code-search API queried for `t0_ceremony`, `t0_ceremony.sh`, `T0_DRY_RUN`, `T0_PRS` filenames and content.
+
+### Result: **SCRIPT NOT FOUND IN ANY BRANCH**
+
+| Script | Expected Size | Expected Location | Found | Branch/Commit |
+|--------|--------------|-------------------|-------|---------------|
+| `t0_ceremony.sh` | 635 L | `prep/t0-ceremony-runbook` or `scripts/` | ❌ NOT FOUND | — |
+| `t0_preflight_checklist.md` | 171 L | `docs/` or `scripts/` | ❌ NOT FOUND | — |
+| `t0_mirror_pr_body.md` | 140 L | `docs/` or root | ❌ NOT FOUND | — |
+| `wave24_rvr018_submit_ceremony.md` | 135 L | workspace doc | ❌ NOT FOUND | — |
+
+### Branch `prep/t0-ceremony-runbook` Status
+
+The branch **exists** (ref `refs/heads/prep/t0-ceremony-runbook`, SHA `31f46b19`) but is **identical to `main`**:
+
+```
+compare/main...prep/t0-ceremony-runbook:
+  ahead_by  = 0
+  behind_by = 0
+  files     = [] (empty — zero diff)
+```
+
+The branch was created but no files were ever committed to it. It is a no-op branch.
+
+### Evidence Source
+
+EPIC #61 comment (ID `4458389819`, [gHashTag/trinity-fpga#61](https://github.com/gHashTag/trinity-fpga/issues/61), 2026-05-15 08:53 UTC) explicitly states:
+
+> **"Operator runbook fully prepared in workspace, NOT EXECUTED (zero repo state touched)"**
+
+This confirms the ceremony scripts were prepared **locally by the Operator** but deliberately never committed to any remote branch or repository at time of rehearsal. The scripts exist as an Operator-side local workspace artifact only.
+
+---
+
+## §2 — Syntactic Validation (Step 2)
+
+**Status: CANNOT EXECUTE — script not accessible in any git branch.**
+
+Expected checks (per task specification):
+- `bash -n t0_ceremony.sh` — syntax check
+- `shellcheck t0_ceremony.sh` — linter
+- Shebang / `set -euo pipefail` / IFS hygiene verification
+- Apache-2.0 header presence
+
+**Verdict from prior art (EPIC #61 comment):** The comment states `t0_ceremony.sh` is "`bash -n` clean" and has "`DRY_RUN=1` default". This is Operator self-attestation, not independently verifiable by this rehearsal agent.
+
+**ICA-T0-001 (P0):** Syntactic validation BLOCKED — script not in any repository branch. Cannot independently confirm `bash -n` clean, `set -euo pipefail`, or Apache-2.0 header.
+
+---
+
+## §3 — Semantic DRY-RUN Execution (Step 3)
+
+**Status: CANNOT EXECUTE — script binary absent from workspace.**
+
+Per hard constraint: *"If script lacks DRY_RUN guard, STOP IMMEDIATELY — report as P0 ICA, do NOT execute live commands."*
+
+The script's absence is equivalent to an unverifiable DRY_RUN guard. **Execution halted.** No `T0_DRY_RUN=1 bash t0_ceremony.sh` was attempted.
+
+**What the ceremony is expected to do** (reconstructed from EPIC #61 comment `4458389819`):
+
+| Step | Action | Target PRs |
+|------|--------|------------|
+| 0 | Pre-flight: verify CI green on all PRs | #35, #36, #37, #38, #39 (+#40) |
+| 1 | `gh pr ready` (undraft) each PR in order; empty-commit retrigger for ICA-W-001 | #35 → #36 → #37 → #38 → #39 |
+| 1b | Merge #40 into #37 lane prior to #37 undraft | #40 → merged to `feat/wave-24-eqy-gate` |
+| 2 | `apt-get install yosys + eqy`; set `EQY_STRICT=1` | CI runner setup |
+| 3 | Wait for CI gate on each PR before advancing | per-PR loop |
+| 4 | `gh pr merge --squash` in order | #35 → #36 → #37 → #38 → #39 |
+| 5 | Trigger main GDS dispatch after all merges | post-all-merge action |
+
+**ICA-T0-002 (P0):** DRY-RUN execution BLOCKED — `t0_ceremony.sh` not retrievable from any branch. Cannot verify DRY_RUN guard, echo logic, idempotency, or abort criteria.
+
+---
+
+## §4 — Mirror Sequence Verification (Step 4)
+
+**Status: CANNOT VERIFY via script execution — static analysis only.**
+
+### Expected merge order (from EPIC #61):
+
+```
+#40 → merged into feat/wave-24-eqy-gate  (pre-step, ICA-E-003 mitigation)
+#35 (Booth)   → squash-merge to feat/silicon-g1-followup
+#36 (Wallace) → squash-merge to feat/silicon-g1-followup
+#37 (EQY)     → squash-merge to feat/silicon-g1-followup
+#38 (Nano)    → squash-merge to main
+#39 (MAX)     → squash-merge to main
+```
+
+### Current CI gate status (observed at rehearsal time):
+
+| PR | Title | Base Branch | Draft | gl_test | gds | precheck | EQY | T-0 Gate |
+|----|-------|-------------|-------|---------|-----|----------|-----|----------|
+| [#35](https://github.com/gHashTag/tt-trinity-gf16/pull/35) | Booth radix-4 | `feat/silicon-g1-followup` | 🔒 | ✅ success | ✅ success | ✅ success | n/a | ✅ **READY** |
+| [#36](https://github.com/gHashTag/tt-trinity-gf16/pull/36) | Wallace dot4 | `feat/silicon-g1-followup` | 🔒 | ⚠️ NOT RUN | ⚠️ NOT RUN | ⚠️ NOT RUN | n/a | ⚠️ **ICA-W-001 OPEN** |
+| [#37](https://github.com/gHashTag/tt-trinity-gf16/pull/37) | EQY gate | `feat/silicon-g1-followup` | 🔒 | ⏭️ skipped | ❌ **failure** | ⏭️ skipped | ✅ ×2 | ❌ **gds BLOCKED** |
+| [#38](https://github.com/gHashTag/tt-trinity-gf16/pull/38) | Nano 1×1 top | `main` | 🔒 | ✅ success | ✅ success | ✅ (in-progress dup) | n/a | ✅ **READY** |
+| [#39](https://github.com/gHashTag/tt-trinity-gf16/pull/39) | MAX 4×4 mesh | `main` | 🔒 | ✅ success | ✅ success | ✅ (in-progress dup) | n/a | ✅ **READY** |
+| [#40](https://github.com/gHashTag/tt-trinity-gf16/pull/40) | t27c twins | `feat/wave-24-eqy-gate` | 🔒 | n/a | ⏳ in-progress | n/a | ✅ ×2 | ⏳ **gds pending** |
+
+### Sequence blocker analysis:
+
+- **PR #36 (Wallace):** No CI checks ran except GitGuardian. `gl_test`, `gds`, and `precheck` have zero results. This is ICA-W-001 (documented open in EPIC #61). The ceremony script intends to handle this via empty-commit retrigger in step 1, but the retrigger has not yet been executed.
+- **PR #37 (EQY):** `gds` workflow **FAILED** (run ID [25906270525](https://github.com/gHashTag/tt-trinity-gf16/actions/runs/25906270525)). `gl_test` and `precheck` were skipped (this is expected for a branch targeting `feat/silicon-g1-followup` rather than `main` — the TT CI suite may not evaluate non-`main` targets for GDS). The EQY-specific workflow passed ×2, which is the primary gate for #37. Whether the `gds` failure is a hard blocker for merge depends on the ceremony script's gate logic — this cannot be verified without the script.
+- **PR #40 (t27c twins):** `gds` still in-progress at rehearsal time; must complete before PR #40 can be merged into #37's branch.
+
+---
+
+## §5 — Preflight Checklist Cross-Check (Step 5)
+
+**Status: CANNOT EXECUTE — `t0_preflight_checklist.md` not found in any branch.**
+
+From EPIC #61 comment, the checklist is described as 171 lines, RU/EN bilingual. Content not retrievable.
+
+**Pre-conditions reconstructed from EPIC #61 and CI observations:**
+
+| Checklist Item | Expected | Observed | Status |
+|----------------|----------|----------|--------|
+| PR #35 CI green (Booth) | gl_test+gds+precheck PASS | ✅ All green | ✅ MET |
+| PR #36 CI green (Wallace) | gl_test+gds PASS | ⚠️ No CI results at all | ⚠️ NOT MET |
+| PR #37 gds green (EQY) | gds PASS | ❌ gds FAILED | ❌ NOT MET |
+| PR #38 CI green (Nano) | gl_test+gds PASS | ✅ Both green | ✅ MET |
+| PR #39 CI green (MAX) | gl_test+gds PASS | ✅ Both green | ✅ MET |
+| PR #40 gds complete (t27c) | gds PASS | ⏳ In-progress | ⏳ PENDING |
+| All PRs in DRAFT state | 6 PRs DRAFT | ✅ All 6 are DRAFT | ✅ MET |
+| Author on all PRs | `Vasilev Dmitrii <admin@t27.ai>` | ✅ Confirmed in EPIC #61 | ✅ MET |
+| prep/t0-ceremony-runbook branch | Contains ceremony scripts | ❌ Empty (=main) | ❌ **NOT MET** |
+| DRY_RUN=1 default verified | bash -n + DRY_RUN guard | ⚠️ Operator self-attested only | ⚠️ UNVERIFIED |
+
+**Checklist drift detected:** 3 of 10 reconstructed pre-conditions are NOT MET (PR #36 CI absent, PR #37 gds failed, prep branch empty). The rehearsal cannot proceed to live execution with these open items.
+
+---
+
+## §6 — Issues Found
+
+| ICA-ID | Severity | Description | Suggested Fix |
+|--------|----------|-------------|---------------|
+| **ICA-T0-001** | **P0** | `t0_ceremony.sh` (635 L) not committed to any branch. `prep/t0-ceremony-runbook` branch is identical to `main` (0-diff). Operator self-attests script is "prepared in workspace" but it is not accessible for independent verification. | Operator MUST commit `t0_ceremony.sh`, `t0_preflight_checklist.md`, `t0_mirror_pr_body.md` to `prep/t0-ceremony-runbook` before T-0 live execution. A second agent can then perform this rehearsal independently. |
+| **ICA-T0-002** | **P0** | DRY-RUN execution BLOCKED because script is absent. Cannot verify DRY_RUN guard, echo logic, idempotency, abort criteria, or merge order. Hard constraint mandates halt. | Same as ICA-T0-001: commit script first. |
+| **ICA-W-001** | **P1** | PR #36 (Wallace) has zero CI check results (only GitGuardian passed). `gl_test`, `gds`, `precheck` never ran. Cause: known infra-flake. Documented in EPIC #61. | Ceremony script step 1 intends empty-commit retrigger. Operator should manually trigger CI on #36 before T-0, or confirm retrigger path in script. |
+| **ICA-E-003 (gds)** | **P1** | PR #37 (EQY gate) has `gds` workflow **FAILED** (run 25906270525). `gl_test` and `precheck` skipped. Whether `gds` failure on a non-`main`-targeting PR is a hard merge gate is unknown without the ceremony script. EQY workflow PASS ×2 is the primary mandate for #37. | Operator should clarify: is gds PASS required for #37 to merge, or is EQY PASS sufficient? If gds is not a gate for `feat/silicon-g1-followup`-targeting PRs, document this explicitly in the preflight checklist. |
+| **ICA-T0-003** | **P1** | PR #40 `gds` still in-progress at rehearsal time. The merge order requires #40 → merged into #37's branch before #37 can be squash-merged. A race condition exists if #40 `gds` completes with failure. | Monitor #40 gds outcome. If failure, invoke ICA-C-001 fallback (structural-twin path already chosen per EPIC #61). |
+| **ICA-T0-004** | **P2** | Independent syntactic validation (`bash -n`, `shellcheck`, `set -euo pipefail`, Apache-2.0 header) is impossible without committed script. Operator self-attestation (`bash -n` clean, `DRY_RUN=1` default) is noted but not independently reproducible. | Commit script to enable independent validation. |
+| **ICA-T0-005** | **P2** | `wave24_rvr018_submit_ceremony.md` (135 L NASA report template) referenced but not committed. Post-T-0 reporting will lack a canonical template. | Commit template to `docs/` directory. |
+
+---
+
+## §7 — Idempotency Verdict
+
+**CANNOT ASSESS** — script not available for execution. Expected behavior (from EPIC #61): second run should detect already-merged PRs and skip without crash. This cannot be verified.
+
+---
+
+## §8 — GO / HOLD Verdict for T-0 Live Execution
+
+### **HOLD — 2 P0 blockers + 2 P1 blockers**
+
+| # | Blocker | Severity | Clearance Path |
+|---|---------|----------|----------------|
+| 1 | `t0_ceremony.sh` not committed to any branch | **P0** | Operator must commit script to `prep/t0-ceremony-runbook` |
+| 2 | DRY-RUN rehearsal execution BLOCKED (script absent) | **P0** | Resolved once blocker 1 cleared; re-run this rehearsal |
+| 3 | PR #36 CI checks never ran (ICA-W-001) | P1 | Empty-commit retrigger or manual CI trigger before T-0 |
+| 4 | PR #37 gds FAILED | P1 | Clarify if gds is a required gate for this PR; document decision |
+
+### Pre-conditions for GO:
+
+1. ✅ Operator commits `t0_ceremony.sh` + companion scripts to `prep/t0-ceremony-runbook`
+2. ✅ Independent `bash -n` + `shellcheck` PASS confirmed by second agent
+3. ✅ `T0_DRY_RUN=1` guard independently verified (script readable and executable)
+4. ✅ DRY-RUN execution completes with `exit=0`, no live `gh pr merge` dispatched
+5. ✅ PR #36 CI completes (gl_test PASS after retrigger)
+6. ✅ PR #37 gds gate decision documented (PASS or waived with rationale)
+7. ✅ PR #40 gds completes (success required before #40→#37 merge)
+
+---
+
+## §9 — Comment URL on EPIC #61
+
+See §10 below — comment posted after report completion.
+
+---
+
+## §10 — Appendix: Rehearsal Execution Log
+
+### Step 1: Branch enumeration
+
+```
+gh api repos/gHashTag/tt-trinity-gf16/git/refs/heads --jq '.[].ref'
+→ 33 branches found including refs/heads/prep/t0-ceremony-runbook
+
+gh api repos/gHashTag/tt-trinity-gf16/contents/scripts?ref=prep/t0-ceremony-runbook
+→ Only file: run_sky130_actual.sh (no ceremony scripts)
+
+gh api repos/gHashTag/tt-trinity-gf16/compare/main...prep/t0-ceremony-runbook
+→ ahead_by=0, behind_by=0, files=[] (branch is identical to main)
+```
+
+### Step 2: Cross-repo search
+
+```
+gh api "search/code?q=filename:t0_ceremony.sh+user:gHashTag"
+→ total_count: 0
+
+gh api "search/code?q=t0_ceremony.sh+user:gHashTag"
+→ total_count: 0
+
+Searched: tt-trinity-gf16, trinity-fpga, tt-trinity-max, tt-trinity-nano,
+          tri-mcp, trios, trios-mcp, trinity-agents (all 33 branches each)
+→ No matches found in any repo or branch
+```
+
+### Step 3: Git tree recursive scan
+
+```
+for each of 33 branches in tt-trinity-gf16:
+  gh api "repos/gHashTag/tt-trinity-gf16/git/trees/$branch?recursive=1" \
+    --jq '.tree[] | select(.path | test("t0_ceremony|t0_preflight|t0_mirror")) | .path'
+→ 0 results across all 33 branches
+```
+
+### Steps 4-7: HALTED — P0 ICA-T0-001 triggered
+
+Script not in any accessible location. Per hard constraint, execution of live or dry-run bash commands against an unverifiable script is prohibited.
+
+---
+
+## §11 — Anchor
+
+`phi^2 + phi^-2 = 3 · QUANTUM BRAIN 1:1 SILICON · DOI 10.5281/zenodo.19227877 · NEVER STOP`
+
+---
+
+*RVR-018-DR-T0-REHEARSAL · Vasilev Dmitrii \<admin@t27.ai\> · 2026-05-16*