fix: address code-level issues from subworker audit

- Remove unused generationProfile parameter from verify runner
- Integrate PluginContractRegistry into petit-runner and stateful-runner
- Add deterministic hashStringToSeed to doctor (replaces Math.random())
- Create and pass CleanupManager in stateful-handler
- Remove unconditional auto-registration of built-in plugin contracts
  (they were too aggressive; users can register via opts.pluginContracts)
- Build: clean | Tests: 849 pass, 0 fail

src/test/petit-runner.ts

@@ -105,7 +105,7 @@ export const runPetitTests = async (
   config: TestConfig,
   scopeRegistry?: ScopeRegistry,
   extensionRegistry?: ExtensionRegistry,
-  _pluginContractRegistry?: import('../domain/plugin-contracts.js').PluginContractRegistry,
+  pluginContractRegistry?: import('../domain/plugin-contracts.js').PluginContractRegistry,
   outboundContractRegistry?: OutboundContractRegistry
 ): Promise<TestSuite> => {
   const startTime = Date.now()
@@ -113,6 +113,26 @@ export const runPetitTests = async (
 
   const allRoutes = discoverRoutes(fastify)
   const { routes, skippedRoutes } = filterPetitRoutes(allRoutes, config)
+
+  // Merge plugin contracts into route contracts
+  if (pluginContractRegistry) {
+    for (const route of routes) {
+      const composed = pluginContractRegistry.composeContracts(route)
+      for (const phase of Object.values(composed.phases)) {
+        for (const req of phase.requires) {
+          if (!route.requires.includes(req.formula)) {
+            route.requires.push(req.formula)
+          }
+        }
+        for (const ens of phase.ensures) {
+          if (!route.ensures.includes(ens.formula)) {
+            route.ensures.push(ens.formula)
+          }
+        }
+      }
+    }
+  }
+
   const depth = resolveDepth(config.depth ?? 'standard')
   const generationProfile = config.generationProfile ?? resolveGenerationProfile(config.depth)
   const { commands: commandGroups, cacheHits, cacheMisses } = generateCommands(routes, depth, config.seed, generationProfile)

src/test/stateful-runner.ts

@@ -102,6 +102,26 @@ export const runStatefulTests = async (
   // Skip HEAD routes — auto-generated by Fastify for GET routes, no response body
   const filteredRoutes = allRoutes.filter((r) => r.category !== 'utility' && r.method !== 'HEAD')
   const routes = filterByScope(filteredRoutes, config.scope)
+
+  // Merge plugin contracts into route contracts
+  if (pluginContractRegistry) {
+    for (const route of routes) {
+      const composed = pluginContractRegistry.composeContracts(route)
+      for (const phase of Object.values(composed.phases)) {
+        for (const req of phase.requires) {
+          if (!route.requires.includes(req.formula)) {
+            route.requires.push(req.formula)
+          }
+        }
+        for (const ens of phase.ensures) {
+          if (!route.ensures.includes(ens.formula)) {
+            route.ensures.push(ens.formula)
+          }
+        }
+      }
+    }
+  }
+
   if (routes.length === 0) {
     return {
       tests: [],