fix: harden Phase 4 completeness evidence

Adds fail-closed cross-page ordering proof, explicit cursor movement evidence, stronger acceptance coverage, and discoverable source-ledger regressions while keeping completeness shadow-only. Operational Phase 4 promotion remains gated on representative live-source evidence.

Author: hiidkaboutyou-spec

.github/workflows/rust-editorial-core.yml

@@ -10,7 +10,7 @@ on:
       - "Cargo.lock"
       - "rust/**"
       - "app/completeness*.py"
-      - "tests/test_completeness_engine.py"
+      - "tests/test_completeness*.py"
       - ".github/workflows/rust-editorial-core.yml"
   pull_request:
     branches:
@@ -20,7 +20,7 @@ on:
       - "Cargo.lock"
       - "rust/**"
       - "app/completeness*.py"
-      - "tests/test_completeness_engine.py"
+      - "tests/test_completeness*.py"
       - ".github/workflows/rust-editorial-core.yml"
   workflow_dispatch:
 
@@ -64,4 +64,4 @@ jobs:
       - name: Python Rust completeness integration
         run: |
           python -m pip install -r requirements.txt
-          python -m unittest discover -s tests -p test_completeness_engine.py -v
+          python -m unittest discover -s tests -p "test_completeness*.py" -v