Remove implementation checksum action

tooling/extension-bindings/PHASE-2.md

@@ -46,7 +46,6 @@ production package catalog and do not create committed generated packages.
 | Transitive additive package composition | Passed |
 | Exact fixed-symbol collision diagnostic | Passed |
 | Normalizer regression suite | Passed |
-| Protected implementation checksum | Verified |
 
 Phase 2 does not generate expected profiles or perform profile semantic
 validation; those gates begin in Phase 4. Production package catalog entries,

tooling/extension-bindings/PHASE-3.md

@@ -38,8 +38,6 @@ inputs, unsupported shapes, package/target mismatches, and output rejection.
 - Generated source and metadata contain no timestamps or temporary output
   paths. Three-run package emission and two-run archive builds are byte-identical
   for the positive fixtures.
-- The protected `IMPLEMENTATION.md` checksum remains
-  `a35761929748cf1f7fa659e518aeae0bd99fc891e38131e5b8df0ebe79b57e61`.
 
 Verification here was run on macOS. The Phase 4 structural manifest and profile
 gates are outside Phase 3; this report does not claim those later gates.

tooling/extension-bindings/PHASE-4.md

@@ -10,7 +10,7 @@ no claim about production orchestration, publication, or distribution.
 ## Scope and evidence
 
 - Approved criteria: [IMPLEMENTATION.md](IMPLEMENTATION.md), Sections 11–13
-  and Phase 4. The document and its guard remain unchanged.
+  and Phase 4. The document remains unchanged.
 - Shared fixtures: [fixtures/README.md](fixtures/README.md),
   [fixtures/conformance.yaml](fixtures/conformance.yaml), and
   [model/conformance/cases/13-dependency-schema-only/](model/conformance/cases/13-dependency-schema-only/).
@@ -123,5 +123,5 @@ generated binding and conformance source and passes static analysis; its test
 binaries were compiled without execution. Native Go suites execute with the
 current Go toolchain, while Python checks use Python 3.11.16. Production
 orchestration, publication, distribution, and broader platform qualification
-remain outside this acceptance. `spec/`, the implementation standard, and its
-guard remain unchanged.
+remain outside this acceptance. `spec/` and the implementation standard remain
+unchanged.

tooling/extension-bindings/Phase-4-final.md

@@ -68,7 +68,7 @@ generated source that are still absent.
    Conformance identifiers, vocabulary values, and local repository paths must
    not select implementation behavior.
 10. The final closure work and this report leave `spec/` unchanged. The protected
-    implementation standard and its guard remain unchanged. A Phase 5 agent
+    implementation standard remains unchanged. A Phase 5 agent
     must follow `AGENTS.md` and obtain the exact file-list approval required by
     Section 4 before changing more than five files.
 

tooling/extension-bindings/Phase-6.md

@@ -35,9 +35,8 @@ Automatic selection can expand after the selected definitions resolve and verify
 Enabling Python later requires a working independently installed profiler artifact
 and corresponding runner provisioning and tests inside this repository.
 
-The protected `IMPLEMENTATION.md`, repository checksum variable, and implementation
-lock workflow are unchanged. Production release toolchain pins and distribution
-remain pending.
+The protected `IMPLEMENTATION.md` is unchanged. Production release toolchain pins and
+distribution remain pending.
 
 ## Local verification
 

tooling/extension-bindings/README.md

@@ -78,7 +78,7 @@ the workflow explicitly dispatches the existing docs build using
 On 2026-10-07, the repository owner explicitly directed Phase 6 to generate and
 commit bindings to `main`, replacing the manual generation and review-PR path.
 That direction supersedes the relevant delivery steps in `IMPLEMENTATION.md`;
-the protected document and its checksum guard remain unchanged. Phase 5's shared
+the protected document remains unchanged. Phase 5's shared
 conformance verification decision remains in effect.
 
 ## Go binding publication