chore: estate-wide chore + stale-path sweep (2026-04-17)

Part of the estate-wide 2026-04-17 cleanup pass. Commits chore-safe
content only: docs, workflow YAML, gitignore, a2ml migration drift,
editorconfig, ncl. Dependency manifests (Cargo.toml/.lock, package.json,
mix.exs, etc.) and source files intentionally held back so no broken
intermediate states where a .rs commit splits from its Cargo.toml.

Also includes stale-path fixes for four ecosystem moves:
  hypatia       -> verification-ecosystem/hypatia
  echidna       -> verification-ecosystem/echidna
  ephapax       -> developer-ecosystem/nextgen-languages/ephapax
  panic-attacker -> games-ecosystem/panic-attacker

Staged files: 3
Held back (source / dep-manifests): 0

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/k9-svc-validation.yml

@@ -5,7 +5,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Validate contractiles
         run: |
           #!/bin/bash

TEST-NEEDS.md

@@ -37,19 +37,19 @@
 - Result: FULL COMPLIANCE. All 8 structural fields present. Well-structured manifest with 110 lines.
 
 **3. echidna (Rust — theorem prover)**
-- File: `/var/mnt/eclipse/repos/echidna/0-AI-MANIFEST.a2ml`
+- File: `/var/mnt/eclipse/repos/verification-ecosystem/echidna/0-AI-MANIFEST.a2ml`
 - Result: INCOMPLETE (3/8). Has SPDX and context/canonical but uses non-standard structure missing (manifest), (identity), (purpose), (name), (version) wrappers. Needs migration to standard A2ML format.
 
 **4. panic-attacker (Rust — security scanner)**
-- File: `/var/mnt/eclipse/repos/panic-attacker/0-AI-MANIFEST.a2ml`
+- File: `/var/mnt/eclipse/repos/games-ecosystem/panic-attacker/0-AI-MANIFEST.a2ml`
 - Result: INCOMPLETE (4/8). Has SPDX, (manifest), version, canonical but missing (identity), (purpose), (name) sections. Partially migrated format.
 
 **5. hypatia (Elixir/Rust — CI/CD scanner)**
-- File: `/var/mnt/eclipse/repos/hypatia/0-AI-MANIFEST.a2ml`
+- File: `/var/mnt/eclipse/repos/verification-ecosystem/hypatia/0-AI-MANIFEST.a2ml`
 - Result: FULL COMPLIANCE. All 8 structural fields present. 117 lines with comprehensive context tiers.
 
 **6. standards (Mixed — multi-standard monorepo)**
-- File: `/var/mnt/eclipse/repos/standards/0-AI-MANIFEST.a2ml`
+- File: `/var/mnt/eclipse/repos/developer-ecosystem/standards/0-AI-MANIFEST.a2ml`
 - Result: MINIMAL (1/8). Large file (128 lines, 4383B) but uses legacy format without standard S-expression structure. Only canonical locations present. Needs full rewrite.
 
 ### Internal test suite also passing

docs/accessibility/STANDARD.a2ml

@@ -228,7 +228,7 @@ HAS is structured as a contractile system with three compliance levels:
 
 2. Add Adjustfile.a2ml:
    ```bash
-   cp /var/mnt/eclipse/repos/standards/accessibility/Adjustfile.a2ml \
+   cp /var/mnt/eclipse/repos/developer-ecosystem/standards/accessibility/Adjustfile.a2ml \
      .machine_readable/contractiles/adjust/
    ```
 
@@ -253,7 +253,7 @@ HAS is structured as a contractile system with three compliance levels:
 5. Document accessibility features:
    ```bash
    mkdir -p docs/accessibility
-   cp /var/mnt/eclipse/repos/standards/accessibility/README.adoc \
+   cp /var/mnt/eclipse/repos/developer-ecosystem/standards/accessibility/README.adoc \
      docs/accessibility/
    ```