TERRA §3 — Probe-3 Bounded-Repair Re-Review v12

Verdict: PASS — static byte review only. No harness, broker, socket, or fixture state was launched or created.

Reviewed object (GUARD 1)

Branch: feat/827-gate0-probe
reviewed object = ca7b522e7beb09fbff64485510201b372d305d34
v11 baseline: 93a5fd018d26f16aa58a3ec1afc0c9bc83935fed
Harness: docs/compaction-refresh/probes/p3_d4_focused_run.py
Verified harness SHA-256: 92ff11bd35a72c3bda8f9722837cd9058a711f688cc75bf5e5df106645f81553
Pre-audit reviewed: docs/compaction-refresh/reviews/GATE0-PROBE3-PREAUDIT-v12.md at the reviewed object.

Fresh git fetch origin feat/827-gate0-probe -q resolved both local HEAD and origin/feat/827-gate0-probe to the reviewed full SHA before the object hash was trusted.

Null-delta gate

(a) Exact authorized diff — PASS

The exact harness diff from v11 has 1 insertion, 1 deletion, one zero-context hunk only:

@@ -484 +484 @@ def gated_launcher_precondition(
-        "initialize_runtime_generation(generation_file, generation)",
+        "initialize_generation: Callable[[Path, int], None] = initialize_runtime_generation",

No other harness hunk or line changed. This is the authorized diagnostic behavior_markers entry at L484.

(b) B5–B9 / D4 security-bearing bytes — PASS

The sole hunk is old/new L484, inside the diagnostic marker tuple (L481–489), and does not intersect B5–B9 assertion/control or D4 logic ranges. Independent slice SHA-256 comparisons from v11 to the reviewed object were identical:

Surface	Range	SHA-256 on both revisions
B5–B9 controls before marker tuple	L351–L480	`85eda967698af5699593daa12f761abd4b759a11a03323dc867905d286455aec`
B5–B9 controls after marker tuple	L490–L575	`b92bd920d896450f89a14979dd9a557a82ad590d7c9a73e900ebc89979a48986`
D4 generated lifecycle extension	L159–L251	`4bdc047f7494029d951763555a797103ca25da647b255b287378771d20da209b`
D4 runtime assertions (`lease_anchor_registered` included)	L579–L672	`ddaae13f0302b401ada76f1c96b9f66f2938d7afa614928f4cffb187da832856`
D4 orchestration / `--runs` parser	L749–L849	`a28c36296b2ba8fffe77912b7e25b793047393bae79a9242df1727bd21ab2f92`

Therefore the diagnostic-only L484 hunk is non-intersecting and all B5–B9/D4 security-bearing bytes are byte-identical to v11.

Hardened-marker correctness — PASS

The replacement is exactly initialize_generation: Callable[[Path, int], None] = initialize_runtime_generation.
The exact string is byte-present in the pinned launcher at f400830738998db105107a2a4c69c7f2a2a6fd5d:packages/mosaic/framework/tools/lease-broker/launch-runtime.py:49.
The same launcher imports the real function at L15 and invokes the DI-bound parameter at L90; the marker consequently proves the real helper binding, not merely a same-named call.
Pinned launcher SHA-256 was independently verified as e950e4224e280f16979d90cabb89aa1896c5ee28bed2df957e14d018d43cda82.

Pre-audit independently re-verified — PASS

All remaining precondition checks pass against the real pinned closure bytes:

Requirement	Satisfying real bytes
Remaining launcher markers	registration action L77; DI binding L49; fixture socket env lookup L70; fixture generation path L89; generation-file env assignment L98; exec L101.
Generation markers	`lease_generation.py` at `f4008307`: `read_runtime_generation` L78 and `bump_runtime_generation` L90; SHA-256 `061625402f08488eac47acd23272904e71fd1a71fd15b3bdab158632c801be4c`.
Pinned broker closure	`p3_generation_broker.py` at `23c0caca`: explicit generation-module load L29–41; fixture socket bind/permissions L46–63; fixture-parent generation-file guard L71–75; SHA-256 `4db4fef1ac6658a8ca79ad5091cefc901d2aa26003265c3d6726c294cf895cad`.
Harness path/socket checks	Fixture broker socket equality and no inherited generation file: L452–455; all ten fixture-relative variables: L456–471; temporary-root socket requirement: L473–474.
Fixture construction satisfying those checks	Fixture paths/environment L675–736; root-owned workspace/sessions, socket, logs, and extension construction L749–759.
Complete pinned closure and hash gates	Exact three-object selection and SHA gate L397–433; materialized pinned files L435–443.

The six remaining launcher marker substrings and both generation-function substrings were independently checked as byte-present in the pinned objects. Thus no remaining marker or path/socket precondition has a static mismatch with the real closure.

Required unchanged / absent checks

SHA pins: L41–L43 byte-identical (7396f46357620118d3da27aa074d422186600e8a4320fc0f56774439af14e877).
SHA gate / before-exec rehashes / bytecode rejection: unchanged: materialize SHA gate L426; rehashes L539/L565/L568; reject_pinned_bytecode L498–501.
Fixture: L704 pre-create and L709 exist_ok=True are byte-identical to v11 (L700–L710 slice SHA-256 3137ef255435ac613fe1332138bbb13111a9d3efc502a34403b3dce21287b04e).
Flags and runs: unchanged launcher -s -S -B (L511–L517), broker -I -S -B (L551–L556), and --runs default=3, choices=(3,) (L840).
Assertions: lease_anchor_registered is intact at L594–L596 in the byte-identical D4 assertion slice; no B5–B9/D4 assertion is softened, removed, or repointed.
Absent from the exact one-line harness delta: P5, P6, P2-banking, retry-laundering, and live/prod-path changes.

Guard 2 — independent authorship

These review-document bytes were authored by this reviewer session. Repair author ms-p3-fix did not author this document; this reviewer did not build or alter the harness and is not Mos.

Guard 3 — separate publication

This review is committed separately on top of ca7b522e7beb09fbff64485510201b372d305d34; its publication commit must preserve the reviewed harness object SHA-256 92ff11bd35a72c3bda8f9722837cd9058a711f688cc75bf5e5df106645f81553.

TERRA §3 v12 PASS. FIRE remains separately gated on Mos.

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