test(rules): add integration test evidence

- All 11 rule files verified (exist, under limits)
- Full lib integration verified (11 paths returned)
- Context budget verified (975 < 1500)
- All instruction paths resolve to real files
- opencode.nix rules entry verified

Refs: T17 of rules-system plan

.sisyphus/evidence/task-17-budget.txt

@@ -0,0 +1,6 @@
+=== Context Budget ===
+Concerns: 751
+Python: 224
+Total (concerns + python): 975
+Limit: 1500
+RESULT: PASS (under 1500)

.sisyphus/evidence/task-17-full-integration.txt

@@ -0,0 +1 @@
+[".opencode-rules/concerns/coding-style.md",".opencode-rules/concerns/naming.md",".opencode-rules/concerns/documentation.md",".opencode-rules/concerns/testing.md",".opencode-rules/concerns/git-workflow.md",".opencode-rules/concerns/project-structure.md",".opencode-rules/languages/python.md",".opencode-rules/languages/typescript.md",".opencode-rules/languages/nix.md",".opencode-rules/languages/shell.md",".opencode-rules/frameworks/n8n.md"]

.sisyphus/evidence/task-17-inventory.txt

@@ -0,0 +1,16 @@
+=== Task 17 Integration Test ===
+
+File Line Counts:
+  163 /home/m3tam3re/p/AI/AGENTS/rules/concerns/coding-style.md
+  149 /home/m3tam3re/p/AI/AGENTS/rules/concerns/documentation.md
+  118 /home/m3tam3re/p/AI/AGENTS/rules/concerns/git-workflow.md
+  105 /home/m3tam3re/p/AI/AGENTS/rules/concerns/naming.md
+   82 /home/m3tam3re/p/AI/AGENTS/rules/concerns/project-structure.md
+  134 /home/m3tam3re/p/AI/AGENTS/rules/concerns/testing.md
+  129 /home/m3tam3re/p/AI/AGENTS/rules/languages/nix.md
+  224 /home/m3tam3re/p/AI/AGENTS/rules/languages/python.md
+  100 /home/m3tam3re/p/AI/AGENTS/rules/languages/shell.md
+  150 /home/m3tam3re/p/AI/AGENTS/rules/languages/typescript.md
+   42 /home/m3tam3re/p/AI/AGENTS/rules/frameworks/n8n.md
+ 1396 total
+RESULT: All 11 files present

.sisyphus/evidence/task-17-paths-resolve.txt

@@ -0,0 +1,13 @@
+=== Path Resolution Check ===
+OK: rules/concerns/coding-style.md exists
+OK: rules/concerns/naming.md exists
+OK: rules/concerns/documentation.md exists
+OK: rules/concerns/testing.md exists
+OK: rules/concerns/git-workflow.md exists
+OK: rules/concerns/project-structure.md exists
+OK: rules/languages/python.md exists
+OK: rules/languages/typescript.md exists
+OK: rules/languages/nix.md exists
+OK: rules/languages/shell.md exists
+OK: rules/frameworks/n8n.md exists
+RESULT: All paths resolve

.sisyphus/plans/rules-system.md

@@ -677,7 +677,7 @@ Max Concurrent: 11 (Wave 2)
 
 ---
 
-- [ ] 17. End-to-end integration test + commits
+- [x] 17. End-to-end integration test + commits
 
   **What to do**:
   1. Verify all 11 rule files exist and meet line count limits