fix(workflows): resolve git revision error in KB lint workflow

- Fix HEAD~1...HEAD error for shallow clones by using github.event.before/after
- Add proper error suppression with 2>/dev/null
- Add fallback logic for edge cases (initial commits, force pushes)
- Archive resolved runner setup issue to docs/issues/archive/resolved/
- Add archive documentation and next steps guide

Fixes workflow execution on test/runner-validation branch.
Resolves issue with 'fatal: bad revision' error in logs.

.github/workflows/kb-lint.yml

@@ -32,10 +32,21 @@ jobs:
           # Find all KB files that changed
           if [ "${{ github.event_name }}" = "pull_request" ]; then
             # For pull requests, check changed files
-            changed_files=$(git diff --name-only --diff-filter=ACMR origin/${{ github.base_ref }}...HEAD -- 'kb/**/*.md' || true)
+            changed_files=$(git diff --name-only --diff-filter=ACMR origin/${{ github.base_ref }}...HEAD -- 'kb/**/*.md' 2>/dev/null || true)
           else
-            # For push, check all KB files
-            changed_files=$(git diff --name-only --diff-filter=ACMR HEAD~1...HEAD -- 'kb/**/*.md' || find kb -type f -name "*.md" 2>/dev/null || true)
+            # For push events, use commit SHAs from event (works with shallow clones)
+            # Fallback to finding all KB files if commit comparison fails
+            if [ -n "${{ github.event.before }}" ] && [ "${{ github.event.before }}" != "0000000000000000000000000000000000000000" ]; then
+              changed_files=$(git diff --name-only --diff-filter=ACMR ${{ github.event.before }}...${{ github.event.after }} -- 'kb/**/*.md' 2>/dev/null || true)
+            else
+              # If no before commit (e.g., initial commit or force push), check all KB files
+              changed_files=$(find kb -type f -name "*.md" 2>/dev/null || true)
+            fi
+            
+            # If git diff failed or returned empty, fallback to finding all KB files
+            if [ -z "$changed_files" ]; then
+              changed_files=$(find kb -type f -name "*.md" 2>/dev/null || true)
+            fi
           fi
           
           if [ -z "$changed_files" ]; then