chore(quality): zero-warning lint sweep + synapse memory stability [Story 123.7]

- Lint sweep across helpers, doctor checks, graph-dashboard, ids,
  synapse layers, data scripts, installer, scripts, and tests:
  trailing commas, dead-var/import removal, formatting alignment.
- tests/synapse/synapse-memory-provider.test.js: refactor mock to use
  injectable _getLoader on provider instance (fixes intermittent failure
  caused by jest.doMock + isolateModules ordering).
- tests/synapse/e2e/pipeline-audit.e2e.js: trailing-comma cleanup.
- .claude/hooks/precompact-session-digest.cjs: single-quote fix in
  inlineScript (resolves last 2 lint warnings).
- New: .synapse/.gitignore — ignore runtime sessions/cache.
- .gitignore: ignore .agents/ (duplicate of .claude/skills/).

Verified:
- npm run lint → 0 errors, 0 warnings
- npx jest tests/synapse/synapse-memory-provider.test.js → 22/22 pass
- npm run typecheck → clean

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

Author: rafaelscosta

.aiox-core/core/code-intel/helpers/dev-helper.js

@@ -6,7 +6,7 @@ const { getEnricher, getClient, isCodeIntelAvailable } = require('../index');
 const RISK_THRESHOLDS = {
   LOW_MAX: 4,       // 0-4 refs = LOW
   MEDIUM_MAX: 15,   // 5-15 refs = MEDIUM
-                     // >15 refs = HIGH
+  // >15 refs = HIGH
 };
 
 // Minimum references to suggest REUSE (>threshold = REUSE, <=threshold = ADAPT)

.aiox-core/core/code-intel/helpers/devops-helper.js

@@ -78,7 +78,6 @@ async function generateImpactSummary(files) {
     } catch { /* skip — partial result ok */ }
 
     const riskLevel = classifyRiskLevel(impact.blastRadius);
-    const fileCount = impact.references ? impact.references.length : 0;
     const topFiles = (impact.references || [])
       .map((r) => r.file || r.path || 'unknown')
       .slice(0, 10);

.aiox-core/core/code-intel/helpers/planning-helper.js

@@ -7,7 +7,7 @@ const { getEnricher, getClient, isCodeIntelAvailable } = require('../index');
 const RISK_THRESHOLDS = {
   LOW_MAX: 4,       // 0-4 refs = LOW
   MEDIUM_MAX: 15,   // 5-15 refs = MEDIUM
-                     // >15 refs = HIGH
+  // >15 refs = HIGH
 };
 
 /**

.aiox-core/core/code-intel/helpers/qa-helper.js

@@ -7,14 +7,14 @@ const { getEnricher, getClient, isCodeIntelAvailable } = require('../index');
 const RISK_THRESHOLDS = {
   LOW_MAX: 4,       // 0-4 refs = LOW
   MEDIUM_MAX: 15,   // 5-15 refs = MEDIUM
-                     // >15 refs = HIGH
+  // >15 refs = HIGH
 };
 
 // Coverage status thresholds based on test reference count
 const COVERAGE_THRESHOLDS = {
   INDIRECT_MAX: 2,  // 1-2 test refs = INDIRECT
   MINIMAL_MAX: 5,   // 3-5 test refs = MINIMAL
-                     // >5 test refs = GOOD
+  // >5 test refs = GOOD
 };
 
 /**

.aiox-core/core/config/template-overrides.js

@@ -53,7 +53,7 @@ function getTemplateOverrides(resolvedConfig) {
   if (unknown.length > 0) {
     throw new Error(
       `Unknown story section ID(s) in template_overrides: ${unknown.join(', ')}. ` +
-      `Valid IDs: ${KNOWN_STORY_SECTIONS.join(', ')}`
+      `Valid IDs: ${KNOWN_STORY_SECTIONS.join(', ')}`,
     );
   }
 

.aiox-core/core/doctor/checks/rules-files.js

@@ -47,7 +47,6 @@ async function run(context) {
     };
   }
 
-  const present = EXPECTED_RULES.length - missing.length;
   const severity = missing.length > 3 ? 'FAIL' : 'WARN';
 
   return {

.aiox-core/core/graph-dashboard/cli.js

@@ -278,9 +278,8 @@ Examples:
 
 /**
  * Handle default summary view: dependency tree (compact) + stats + provider status.
- * @param {Object} args - Parsed CLI args
  */
-async function handleSummary(args) {
+async function handleSummary() {
   const codeIntelSource = new CodeIntelSource();
   const registrySource = new RegistrySource();
   const metricsSource = new MetricsSource();

.aiox-core/core/graph-dashboard/data-sources/code-intel-source.js

@@ -161,7 +161,7 @@ class CodeIntelSource {
         Object.entries(deps.dependencies).map(([key, val]) => ({
           id: key,
           ...((typeof val === 'object' && val) || {}),
-        }))
+        })),
       );
     }
 

.aiox-core/core/ids/layer-classifier.js

@@ -44,7 +44,7 @@ const LAYER_RULES = [
  * @returns {'L1' | 'L2' | 'L3' | 'L4'} The boundary layer
  */
 function classifyLayer(entityPath) {
-  if (typeof entityPath !== "string") return "L4";
+  if (typeof entityPath !== 'string') return 'L4';
 
   // Normalize: forward slashes, no leading ./ or /
   const normalized = entityPath

.aiox-core/core/synapse/layers/layer-processor.js

@@ -50,7 +50,7 @@ class LayerProcessor {
    * @param {object[]} context.previousLayers - Results from previous layers
    * @returns {{ rules: string[], metadata: object } | null} Rules and metadata, or null to skip
    */
-  process(context) {
+  process(_context) {
     throw new Error(`${this.name}: process() must be implemented by subclass`);
   }