diff --git a/.gitignore b/.gitignore
index b947077..5d2e072 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,5 @@
 node_modules/
 dist/
+plugin/**/*.js
+plugin/**/*.js.map
+!routers/*.js
diff --git a/package.json b/package.json
index b7e9960..d17b3bc 100644
--- a/package.json
+++ b/package.json
@@ -2,10 +2,10 @@
   "name": "prism-facet",
   "version": "0.1.0",
   "type": "module",
-  "main": "dist/index.js",
   "scripts": {
-    "build": "tsc",
-    "watch": "tsc --watch"
+    "build": "tsc --project tsconfig.plugin.json",
+    "install-plugin": "node scripts/install.mjs --install",
+    "uninstall-plugin": "node scripts/install.mjs --uninstall"
   },
   "devDependencies": {
     "@types/node": "^25.6.0",
diff --git a/src/prompt-injector.ts b/plugin/core/prompt-injector.ts
similarity index 57%
rename from src/prompt-injector.ts
rename to plugin/core/prompt-injector.ts
index f92ab68..d235c2b 100644
--- a/src/prompt-injector.ts
+++ b/plugin/core/prompt-injector.ts
@@ -1,7 +1,7 @@
 import { readFileSync } from "node:fs";
 import { getRouters } from "./router-loader.js";
-import { getRulesForRouter } from "./rule-store.js";
-import type { RouterContext } from "./types.js";
+import { getRule } from "./rule-store.js";
+import type { RouterContext } from "./router-loader.js";
 
 export interface InjectionResult {
   appendSystemContext?: string;
@@ -9,7 +9,7 @@ export interface InjectionResult {
 
 export async function resolveInjection(
   ctx: RouterContext,
-  logger: { info: (msg: string) => void; warn: (msg: string) => void }
+  log: { info(msg: string): void; warn(msg: string): void }
 ): Promise<InjectionResult> {
   const routers = getRouters();
   const segments: string[] = [];
@@ -19,26 +19,23 @@ export async function resolveInjection(
       const key = await router.module.resolve(ctx);
       if (!key) continue;
 
-      const promptFile = getRulesForRouter(router.name, key);
+      const promptFile = getRule(router.name, key);
       if (!promptFile) continue;
 
       try {
         const content = readFileSync(promptFile, "utf8").trim();
         if (content) {
           segments.push(content);
-          logger.info(`injecting ${router.name}:${key} → ${promptFile}`);
+          log.info(`[prism-facet] injecting ${router.name}:${key} → ${promptFile}`);
         }
       } catch (err) {
-        logger.warn(`failed to read prompt file ${promptFile}: ${String(err)}`);
+        log.warn(`[prism-facet] cannot read ${promptFile}: ${String(err)}`);
       }
     } catch (err) {
-      logger.warn(`router ${router.name} failed: ${String(err)}`);
+      log.warn(`[prism-facet] router ${router.name} failed: ${String(err)}`);
     }
   }
 
   if (segments.length === 0) return {};
-
-  return {
-    appendSystemContext: segments.join("\n\n---\n\n"),
-  };
+  return { appendSystemContext: segments.join("\n\n---\n\n") };
 }
diff --git a/plugin/core/router-loader.ts b/plugin/core/router-loader.ts
new file mode 100644
index 0000000..a7bf157
--- /dev/null
+++ b/plugin/core/router-loader.ts
@@ -0,0 +1,77 @@
+import { readdirSync } from "node:fs";
+import path from "node:path";
+
+export interface RouterContext {
+  agentId: string;
+}
+
+export interface RouterModule {
+  resolve(ctx: RouterContext): string | Promise<string>;
+}
+
+export interface LoadedRouter {
+  name: string;
+  filePath: string;
+  module: RouterModule;
+}
+
+const _G = globalThis as Record<string, unknown>;
+const ROUTERS_KEY = "_prismFacetRouters";
+const LOAD_COUNTER_KEY = "_prismFacetLoadCounter";
+
+function getRouterMap(): Map<string, LoadedRouter> {
+  if (!(_G[ROUTERS_KEY] instanceof Map)) {
+    _G[ROUTERS_KEY] = new Map<string, LoadedRouter>();
+  }
+  return _G[ROUTERS_KEY] as Map<string, LoadedRouter>;
+}
+
+function routerNameFromFile(filename: string): string {
+  return filename.replace(/\.(ts|js|mjs)$/, "");
+}
+
+export async function loadRouters(
+  routersDir: string,
+  log: { info(msg: string): void; warn(msg: string): void }
+): Promise<void> {
+  const map = getRouterMap();
+  map.clear();
+
+  if (typeof _G[LOAD_COUNTER_KEY] !== "number") _G[LOAD_COUNTER_KEY] = 0;
+  (_G[LOAD_COUNTER_KEY] as number)++;
+  const counter = _G[LOAD_COUNTER_KEY] as number;
+
+  let files: string[];
+  try {
+    files = readdirSync(routersDir).filter(
+      (f) => /\.(ts|js|mjs)$/.test(f) && !f.startsWith(".")
+    );
+  } catch {
+    log.warn(`[prism-facet] routers directory not found: ${routersDir}`);
+    return;
+  }
+
+  for (const file of files) {
+    const name = routerNameFromFile(file);
+    const filePath = path.resolve(routersDir, file);
+    try {
+      const mod = (await import(`${filePath}?v=${counter}`)) as RouterModule;
+      if (typeof mod.resolve !== "function") {
+        log.warn(`[prism-facet] router ${name}: no resolve() export, skipping`);
+        continue;
+      }
+      map.set(name, { name, filePath, module: mod });
+      log.info(`[prism-facet] router loaded: ${name}`);
+    } catch (err) {
+      log.warn(`[prism-facet] router ${name}: failed to load — ${String(err)}`);
+    }
+  }
+}
+
+export function getRouters(): LoadedRouter[] {
+  return Array.from(getRouterMap().values());
+}
+
+export function getRouterNames(): string[] {
+  return Array.from(getRouterMap().keys());
+}
diff --git a/plugin/core/rule-store.ts b/plugin/core/rule-store.ts
new file mode 100644
index 0000000..1e1bb9b
--- /dev/null
+++ b/plugin/core/rule-store.ts
@@ -0,0 +1,56 @@
+import { readFileSync, writeFileSync } from "node:fs";
+
+export type RuleStore = Record<string, string>; // "router:key" → prompt file path
+
+const _G = globalThis as Record<string, unknown>;
+const RULES_KEY = "_prismFacetRules";
+const RULES_PATH_KEY = "_prismFacetRulesPath";
+
+function getRules(): RuleStore {
+  if (!_G[RULES_KEY] || typeof _G[RULES_KEY] !== "object") {
+    _G[RULES_KEY] = {};
+  }
+  return _G[RULES_KEY] as RuleStore;
+}
+
+function getRulesPath(): string {
+  return (_G[RULES_PATH_KEY] as string) || "";
+}
+
+function save(): void {
+  const p = getRulesPath();
+  if (!p) return;
+  writeFileSync(p, JSON.stringify(getRules(), null, 2) + "\n", "utf8");
+}
+
+export function initRuleStore(filePath: string): void {
+  _G[RULES_PATH_KEY] = filePath;
+  try {
+    const raw = readFileSync(filePath, "utf8");
+    _G[RULES_KEY] = JSON.parse(raw) as RuleStore;
+  } catch {
+    _G[RULES_KEY] = {};
+  }
+}
+
+export function addRule(router: string, key: string, promptFile: string): void {
+  getRules()[`${router}:${key}`] = promptFile;
+  save();
+}
+
+export function removeRule(router: string, key: string): boolean {
+  const rules = getRules();
+  const ruleKey = `${router}:${key}`;
+  if (!(ruleKey in rules)) return false;
+  delete rules[ruleKey];
+  save();
+  return true;
+}
+
+export function getRule(router: string, key: string): string | undefined {
+  return getRules()[`${router}:${key}`];
+}
+
+export function listRules(): Record<string, string> {
+  return { ...getRules() };
+}
diff --git a/plugin/hooks/before-prompt-build.ts b/plugin/hooks/before-prompt-build.ts
new file mode 100644
index 0000000..5f23c50
--- /dev/null
+++ b/plugin/hooks/before-prompt-build.ts
@@ -0,0 +1,25 @@
+import { resolveInjection } from "../core/prompt-injector.js";
+
+const _G = globalThis as Record<string, unknown>;
+const DEDUP_KEY = "_prismFacetBPBDedup";
+
+export function registerBeforePromptBuild(api: {
+  on(hook: string, handler: (...args: any[]) => any): void;
+  logger: { info(msg: string): void; warn(msg: string): void };
+}): void {
+  if (!(_G[DEDUP_KEY] instanceof WeakSet)) _G[DEDUP_KEY] = new WeakSet<object>();
+  const dedup = _G[DEDUP_KEY] as WeakSet<object>;
+
+  api.on("before_prompt_build", async (event: unknown, ctx: { agentId?: string }) => {
+    if (dedup.has(event as object)) return;
+    dedup.add(event as object);
+
+    const agentId = ctx.agentId || "";
+    if (!agentId) return;
+
+    const result = await resolveInjection({ agentId }, api.logger);
+    if (result.appendSystemContext) {
+      return { appendSystemContext: result.appendSystemContext };
+    }
+  });
+}
diff --git a/plugin/index.ts b/plugin/index.ts
new file mode 100644
index 0000000..b0fb59e
--- /dev/null
+++ b/plugin/index.ts
@@ -0,0 +1,66 @@
+import path from "node:path";
+import { loadRouters } from "./core/router-loader.js";
+import { initRuleStore } from "./core/rule-store.js";
+import { registerBeforePromptBuild } from "./hooks/before-prompt-build.js";
+import { registerPromptRulesTool } from "./tools/prompt-rules.js";
+
+interface PluginConfig {
+  routersDir?: string;
+  rulesFile?: string;
+}
+
+interface OpenClawPluginApi {
+  logger: {
+    info(msg: string): void;
+    warn(msg: string): void;
+    error(msg: string): void;
+  };
+  on(hook: string, handler: (...args: any[]) => any): void;
+  registerTool(def: any): void;
+  config?: PluginConfig;
+}
+
+const _G = globalThis as Record<string, unknown>;
+const LIFECYCLE_KEY = "_prismFacetGatewayLifecycleRegistered";
+
+function normalizeConfig(api: OpenClawPluginApi): PluginConfig {
+  const raw = (api as any).config ?? {};
+  return {
+    routersDir: typeof raw.routersDir === "string" ? raw.routersDir : undefined,
+    rulesFile: typeof raw.rulesFile === "string" ? raw.rulesFile : undefined,
+  };
+}
+
+export default {
+  id: "prism-facet",
+  name: "PrismFacet",
+
+  register(api: OpenClawPluginApi) {
+    const config = normalizeConfig(api);
+    const pluginDir = path.dirname(new URL(import.meta.url).pathname);
+    const routersDir = config.routersDir || path.resolve(pluginDir, "..", "routers");
+    const rulesFile = config.rulesFile || path.resolve(pluginDir, "..", "rules.json");
+
+    // Gateway lifecycle: init once
+    if (!_G[LIFECYCLE_KEY]) {
+      _G[LIFECYCLE_KEY] = true;
+
+      initRuleStore(rulesFile);
+      loadRouters(routersDir, api.logger).catch((err) => {
+        api.logger.error(`[prism-facet] failed to load routers: ${String(err)}`);
+      });
+
+      api.on("gateway_stop", () => {
+        _G[LIFECYCLE_KEY] = false;
+      });
+    }
+
+    // Agent session hooks: register every time (dedup inside handler)
+    registerBeforePromptBuild(api);
+
+    // Tools
+    registerPromptRulesTool(api, routersDir);
+
+    api.logger.info("[prism-facet] plugin registered");
+  },
+};
diff --git a/openclaw.plugin.json b/plugin/openclaw.plugin.json
similarity index 89%
rename from openclaw.plugin.json
rename to plugin/openclaw.plugin.json
index 0fd8a2b..7e7ec2e 100644
--- a/openclaw.plugin.json
+++ b/plugin/openclaw.plugin.json
@@ -3,9 +3,10 @@
   "name": "PrismFacet",
   "version": "0.1.0",
   "description": "Dynamic system prompt injection via routers and rules",
-  "main": "dist/index.js",
+  "main": "index.js",
   "configSchema": {
     "type": "object",
+    "additionalProperties": false,
     "properties": {
       "routersDir": {
         "type": "string",
diff --git a/plugin/package.json b/plugin/package.json
new file mode 100644
index 0000000..d702479
--- /dev/null
+++ b/plugin/package.json
@@ -0,0 +1,6 @@
+{
+  "name": "prism-facet",
+  "version": "0.1.0",
+  "type": "module",
+  "main": "index.js"
+}
diff --git a/plugin/tools/prompt-rules.ts b/plugin/tools/prompt-rules.ts
new file mode 100644
index 0000000..829ddb5
--- /dev/null
+++ b/plugin/tools/prompt-rules.ts
@@ -0,0 +1,106 @@
+import { addRule, removeRule, listRules } from "../core/rule-store.js";
+import { loadRouters, getRouterNames } from "../core/router-loader.js";
+import { resolveInjection } from "../core/prompt-injector.js";
+
+export function registerPromptRulesTool(
+  api: {
+    registerTool(def: any): void;
+    logger: { info(msg: string): void; warn(msg: string): void };
+  },
+  routersDir: string
+): void {
+  api.registerTool({
+    name: "prompt_rules",
+    description:
+      "Manage PrismFacet prompt injection rules. " +
+      "Actions: add (register a rule mapping router:key to a prompt file), " +
+      "remove (delete a rule), list (show all rules), " +
+      "test (preview which prompts would be injected for an agent), " +
+      "reload-routers (hot-reload all router functions), " +
+      "list-routers (show loaded routers).",
+    inputSchema: {
+      type: "object",
+      properties: {
+        action: {
+          type: "string",
+          enum: ["add", "remove", "list", "test", "reload-routers", "list-routers"],
+          description: "The action to perform",
+        },
+        router: {
+          type: "string",
+          description: "Router name (for add/remove)",
+        },
+        key: {
+          type: "string",
+          description: "Rule key (for add/remove)",
+        },
+        file: {
+          type: "string",
+          description: "Absolute path to prompt file (for add)",
+        },
+        agent: {
+          type: "string",
+          description: "Agent ID to test (for test)",
+        },
+      },
+      required: ["action"],
+    },
+    execute: async (_toolCallId: string, params: Record<string, unknown>) => {
+      const action = params.action as string;
+      const router = params.router as string | undefined;
+      const key = params.key as string | undefined;
+      const file = params.file as string | undefined;
+      const agent = params.agent as string | undefined;
+
+      switch (action) {
+        case "add": {
+          if (!router || !key || !file) {
+            return { result: "Error: add requires router, key, and file" };
+          }
+          addRule(router, key, file);
+          return { result: `Rule added: ${router}:${key} → ${file}` };
+        }
+        case "remove": {
+          if (!router || !key) {
+            return { result: "Error: remove requires router and key" };
+          }
+          const removed = removeRule(router, key);
+          return {
+            result: removed
+              ? `Rule removed: ${router}:${key}`
+              : `Rule not found: ${router}:${key}`,
+          };
+        }
+        case "list": {
+          const rules = listRules();
+          const entries = Object.entries(rules);
+          if (entries.length === 0) return { result: "No rules registered." };
+          return { result: entries.map(([k, v]) => `${k} → ${v}`).join("\n") };
+        }
+        case "test": {
+          if (!agent) return { result: "Error: test requires agent" };
+          const result = await resolveInjection({ agentId: agent }, api.logger);
+          if (!result.appendSystemContext) {
+            return { result: `No prompts matched for agent: ${agent}` };
+          }
+          return { result: `Matched prompts for ${agent}:\n\n${result.appendSystemContext}` };
+        }
+        case "reload-routers": {
+          await loadRouters(routersDir, api.logger);
+          const names = getRouterNames();
+          return { result: `Routers reloaded: ${names.join(", ") || "(none)"}` };
+        }
+        case "list-routers": {
+          const names = getRouterNames();
+          return {
+            result: names.length > 0
+              ? `Loaded routers: ${names.join(", ")}`
+              : "No routers loaded.",
+          };
+        }
+        default:
+          return { result: `Unknown action: ${action}` };
+      }
+    },
+  });
+}
diff --git a/scripts/install.mjs b/scripts/install.mjs
new file mode 100644
index 0000000..3723d91
--- /dev/null
+++ b/scripts/install.mjs
@@ -0,0 +1,143 @@
+#!/usr/bin/env node
+import fs from "node:fs";
+import path from "node:path";
+import { execSync } from "node:child_process";
+import { fileURLToPath } from "node:url";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const projRoot = path.resolve(__dirname, "..");
+const pluginSrcDir = path.join(projRoot, "plugin");
+const routersSrcDir = path.join(projRoot, "routers");
+
+const PLUGIN_ID = "prism-facet";
+const ocDir = path.join(process.env.HOME || "~", ".openclaw");
+const pluginsDir = path.join(ocDir, "plugins");
+const installDir = path.join(pluginsDir, PLUGIN_ID);
+const configPath = path.join(ocDir, "openclaw.json");
+
+const args = process.argv.slice(2);
+const action = args[0];
+
+if (!action || !["--install", "--uninstall", "--update"].includes(action)) {
+  console.log("Usage: node scripts/install.mjs --install | --uninstall | --update");
+  process.exit(1);
+}
+
+function readConfig() {
+  return JSON.parse(fs.readFileSync(configPath, "utf8"));
+}
+
+function writeConfig(cfg) {
+  fs.writeFileSync(configPath, JSON.stringify(cfg, null, 2) + "\n", "utf8");
+}
+
+function setIfMissing(obj, key, value) {
+  if (obj[key] === undefined || obj[key] === null) {
+    obj[key] = value;
+  }
+}
+
+function buildPlugin() {
+  console.log("Building plugin...");
+  // Compile TypeScript from plugin/ to plugin/ (in-place, JS output)
+  execSync("npx tsc --project tsconfig.plugin.json", { cwd: projRoot, stdio: "inherit" });
+}
+
+function install() {
+  // 1. Build
+  buildPlugin();
+
+  // 2. Clean and copy plugin to install dir
+  if (fs.existsSync(installDir)) {
+    fs.rmSync(installDir, { recursive: true });
+  }
+  fs.mkdirSync(installDir, { recursive: true });
+
+  // Copy compiled plugin files
+  copyDirRecursive(pluginSrcDir, installDir, [".ts"]);
+
+  // Copy routers alongside plugin
+  const routersInstallDir = path.join(installDir, "routers");
+  if (fs.existsSync(routersSrcDir)) {
+    fs.mkdirSync(routersInstallDir, { recursive: true });
+    copyDirRecursive(routersSrcDir, routersInstallDir);
+  }
+
+  // Create empty rules.json if not exists
+  const rulesPath = path.join(installDir, "rules.json");
+  if (!fs.existsSync(rulesPath)) {
+    fs.writeFileSync(rulesPath, "{}\n", "utf8");
+  }
+
+  // 3. Update openclaw.json
+  const cfg = readConfig();
+  const plugins = cfg.plugins ??= {};
+  const allow = plugins.allow ??= [];
+  const loadPaths = (plugins.load ??= {}).paths ??= [];
+  const entries = plugins.entries ??= {};
+
+  if (!allow.includes(PLUGIN_ID)) allow.push(PLUGIN_ID);
+  if (!loadPaths.includes(installDir)) loadPaths.push(installDir);
+
+  const entry = entries[PLUGIN_ID] ??= {};
+  setIfMissing(entry, "enabled", true);
+  const hooks = entry.hooks ??= {};
+  setIfMissing(hooks, "allowPromptInjection", true);
+
+  writeConfig(cfg);
+  console.log(`Installed ${PLUGIN_ID} to ${installDir}`);
+  console.log("Restart gateway: openclaw gateway restart");
+}
+
+function uninstall() {
+  const cfg = readConfig();
+  const plugins = cfg.plugins ?? {};
+
+  // Remove from allow
+  if (Array.isArray(plugins.allow)) {
+    plugins.allow = plugins.allow.filter((id) => id !== PLUGIN_ID);
+  }
+
+  // Remove entry
+  if (plugins.entries) delete plugins.entries[PLUGIN_ID];
+
+  // Remove load path
+  if (plugins.load?.paths) {
+    plugins.load.paths = plugins.load.paths.filter((p) => !p.includes(PLUGIN_ID));
+  }
+
+  writeConfig(cfg);
+
+  // Remove install dir
+  if (fs.existsSync(installDir)) {
+    fs.rmSync(installDir, { recursive: true });
+    console.log(`Removed ${installDir}`);
+  }
+
+  console.log(`Uninstalled ${PLUGIN_ID}`);
+}
+
+function copyDirRecursive(src, dest, excludeExts = []) {
+  if (!fs.existsSync(dest)) fs.mkdirSync(dest, { recursive: true });
+  for (const entry of fs.readdirSync(src, { withFileTypes: true })) {
+    const srcPath = path.join(src, entry.name);
+    const destPath = path.join(dest, entry.name);
+    if (entry.isDirectory()) {
+      if (entry.name === "node_modules") continue;
+      copyDirRecursive(srcPath, destPath, excludeExts);
+    } else {
+      if (excludeExts.some((ext) => entry.name.endsWith(ext))) continue;
+      fs.copyFileSync(srcPath, destPath);
+    }
+  }
+}
+
+switch (action) {
+  case "--install":
+  case "--update":
+    install();
+    break;
+  case "--uninstall":
+    uninstall();
+    break;
+}
diff --git a/src/index.ts b/src/index.ts
deleted file mode 100644
index 57b5a57..0000000
--- a/src/index.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-import path from "node:path";
-import { loadRouters } from "./router-loader.js";
-import { initRuleStore } from "./rule-store.js";
-import { resolveInjection } from "./prompt-injector.js";
-import { registerTools } from "./tools.js";
-import type { PluginApi, PluginConfig } from "./types.js";
-
-export function register(api: PluginApi, config?: PluginConfig) {
-  const pluginDir = path.dirname(new URL(import.meta.url).pathname);
-  const routersDir = config?.routersDir || path.resolve(pluginDir, "..", "routers");
-  const rulesFile = config?.rulesFile || path.resolve(pluginDir, "..", "rules.json");
-
-  api.logger.info(`[prism-facet] initializing (routers: ${routersDir}, rules: ${rulesFile})`);
-
-  // Initialize rule store
-  initRuleStore(rulesFile);
-
-  // Load routers
-  loadRouters(routersDir, api.logger).catch((err) => {
-    api.logger.error(`[prism-facet] failed to load routers: ${String(err)}`);
-  });
-
-  // Register before_prompt_build hook
-  api.on("before_prompt_build", async (_event: unknown, ctx: { agentId?: string }) => {
-    const agentId = ctx.agentId || "";
-    if (!agentId) return;
-
-    const result = await resolveInjection({ agentId }, api.logger);
-    if (result.appendSystemContext) {
-      return { appendSystemContext: result.appendSystemContext };
-    }
-  });
-
-  // Register MCP tools
-  registerTools(api, routersDir);
-
-  api.logger.info("[prism-facet] plugin registered");
-}
diff --git a/src/router-loader.ts b/src/router-loader.ts
deleted file mode 100644
index 2d3dc73..0000000
--- a/src/router-loader.ts
+++ /dev/null
@@ -1,53 +0,0 @@
-import { readdirSync } from "node:fs";
-import path from "node:path";
-import type { LoadedRouter, RouterModule } from "./types.js";
-
-const loadedRouters: Map<string, LoadedRouter> = new Map();
-let loadCounter = 0;
-
-function routerNameFromFile(filename: string): string {
-  return filename.replace(/\.(ts|js|mjs)$/, "");
-}
-
-export async function loadRouters(
-  routersDir: string,
-  logger: { info: (msg: string) => void; warn: (msg: string) => void }
-): Promise<void> {
-  loadedRouters.clear();
-  loadCounter++;
-
-  let files: string[];
-  try {
-    files = readdirSync(routersDir).filter((f) =>
-      /\.(ts|js|mjs)$/.test(f) && !f.startsWith(".")
-    );
-  } catch {
-    logger.warn(`routers directory not found: ${routersDir}`);
-    return;
-  }
-
-  for (const file of files) {
-    const name = routerNameFromFile(file);
-    const filePath = path.resolve(routersDir, file);
-    try {
-      // Cache-bust: append query param so Node re-imports the module
-      const mod = (await import(`${filePath}?v=${loadCounter}`)) as RouterModule;
-      if (typeof mod.resolve !== "function") {
-        logger.warn(`router ${name}: no resolve() export, skipping`);
-        continue;
-      }
-      loadedRouters.set(name, { name, filePath, module: mod });
-      logger.info(`router loaded: ${name}`);
-    } catch (err) {
-      logger.warn(`router ${name}: failed to load — ${String(err)}`);
-    }
-  }
-}
-
-export function getRouters(): LoadedRouter[] {
-  return Array.from(loadedRouters.values());
-}
-
-export function getRouterNames(): string[] {
-  return Array.from(loadedRouters.keys());
-}
diff --git a/src/rule-store.ts b/src/rule-store.ts
deleted file mode 100644
index 3c277fd..0000000
--- a/src/rule-store.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-import { readFileSync, writeFileSync } from "node:fs";
-import type { RuleStore } from "./types.js";
-
-let rules: RuleStore = {};
-let rulesFilePath = "";
-
-export function initRuleStore(filePath: string): void {
-  rulesFilePath = filePath;
-  try {
-    const raw = readFileSync(filePath, "utf8");
-    rules = JSON.parse(raw) as RuleStore;
-  } catch {
-    rules = {};
-  }
-}
-
-function save(): void {
-  if (!rulesFilePath) return;
-  writeFileSync(rulesFilePath, JSON.stringify(rules, null, 2) + "\n", "utf8");
-}
-
-export function addRule(router: string, key: string, promptFile: string): void {
-  rules[`${router}:${key}`] = promptFile;
-  save();
-}
-
-export function removeRule(router: string, key: string): boolean {
-  const ruleKey = `${router}:${key}`;
-  if (!(ruleKey in rules)) return false;
-  delete rules[ruleKey];
-  save();
-  return true;
-}
-
-export function getRule(router: string, key: string): string | undefined {
-  return rules[`${router}:${key}`];
-}
-
-export function listRules(): Record<string, string> {
-  return { ...rules };
-}
-
-export function getRulesForRouter(router: string, key: string): string | undefined {
-  return rules[`${router}:${key}`];
-}
diff --git a/src/tools.ts b/src/tools.ts
deleted file mode 100644
index 22274b8..0000000
--- a/src/tools.ts
+++ /dev/null
@@ -1,118 +0,0 @@
-import { addRule, removeRule, listRules } from "./rule-store.js";
-import { loadRouters, getRouterNames } from "./router-loader.js";
-import { resolveInjection } from "./prompt-injector.js";
-import type { PluginApi } from "./types.js";
-
-export function registerTools(
-  api: PluginApi,
-  routersDir: string
-): void {
-  api.registerTool({
-    name: "prompt_rules",
-    description:
-      "Manage PrismFacet prompt injection rules. " +
-      "Actions: add (register a rule), remove (delete a rule), list (show all rules), " +
-      "test (preview which prompts would be injected for an agent), " +
-      "reload-routers (hot-reload all router functions), list-routers (show loaded routers).",
-    parameters: {
-      type: "object",
-      properties: {
-        action: {
-          type: "string",
-          enum: [
-            "add",
-            "remove",
-            "list",
-            "test",
-            "reload-routers",
-            "list-routers",
-          ],
-          description: "The action to perform",
-        },
-        router: {
-          type: "string",
-          description: "Router name (for add/remove)",
-        },
-        key: {
-          type: "string",
-          description: "Rule key (for add/remove)",
-        },
-        file: {
-          type: "string",
-          description: "Prompt file path (for add)",
-        },
-        agent: {
-          type: "string",
-          description: "Agent ID (for test)",
-        },
-      },
-      required: ["action"],
-    },
-    handler: async (params: {
-      action: string;
-      router?: string;
-      key?: string;
-      file?: string;
-      agent?: string;
-    }) => {
-      switch (params.action) {
-        case "add": {
-          if (!params.router || !params.key || !params.file) {
-            return "Error: add requires --router, --key, and --file";
-          }
-          addRule(params.router, params.key, params.file);
-          return `Rule added: ${params.router}:${params.key} → ${params.file}`;
-        }
-
-        case "remove": {
-          if (!params.router || !params.key) {
-            return "Error: remove requires --router and --key";
-          }
-          const removed = removeRule(params.router, params.key);
-          return removed
-            ? `Rule removed: ${params.router}:${params.key}`
-            : `Rule not found: ${params.router}:${params.key}`;
-        }
-
-        case "list": {
-          const rules = listRules();
-          const entries = Object.entries(rules);
-          if (entries.length === 0) return "No rules registered.";
-          return entries
-            .map(([k, v]) => `${k} → ${v}`)
-            .join("\n");
-        }
-
-        case "test": {
-          if (!params.agent) {
-            return "Error: test requires --agent";
-          }
-          const result = await resolveInjection(
-            { agentId: params.agent },
-            api.logger
-          );
-          if (!result.appendSystemContext) {
-            return `No prompts matched for agent: ${params.agent}`;
-          }
-          return `Matched prompts for ${params.agent}:\n\n${result.appendSystemContext}`;
-        }
-
-        case "reload-routers": {
-          await loadRouters(routersDir, api.logger);
-          const names = getRouterNames();
-          return `Routers reloaded: ${names.join(", ") || "(none)"}`;
-        }
-
-        case "list-routers": {
-          const names = getRouterNames();
-          return names.length > 0
-            ? `Loaded routers: ${names.join(", ")}`
-            : "No routers loaded.";
-        }
-
-        default:
-          return `Unknown action: ${params.action}`;
-      }
-    },
-  });
-}
diff --git a/src/types.ts b/src/types.ts
deleted file mode 100644
index e92398a..0000000
--- a/src/types.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-export interface RouterContext {
-  agentId: string;
-}
-
-export interface RouterModule {
-  resolve(ctx: RouterContext): string | Promise<string>;
-}
-
-export interface LoadedRouter {
-  name: string;
-  filePath: string;
-  module: RouterModule;
-}
-
-export interface RuleStore {
-  [ruleKey: string]: string; // "router:key" → prompt file path
-}
-
-export interface PluginApi {
-  logger: {
-    info(msg: string): void;
-    warn(msg: string): void;
-    error(msg: string): void;
-  };
-  on(hook: string, handler: (...args: any[]) => any): void;
-  registerTool(def: any): void;
-}
-
-export interface PluginConfig {
-  routersDir?: string;
-  rulesFile?: string;
-}
diff --git a/tsconfig.json b/tsconfig.plugin.json
similarity index 54%
rename from tsconfig.json
rename to tsconfig.plugin.json
index 16ca579..0489d26 100644
--- a/tsconfig.json
+++ b/tsconfig.plugin.json
@@ -3,14 +3,16 @@
     "target": "ES2022",
     "module": "ESNext",
     "moduleResolution": "bundler",
-    "outDir": "dist",
-    "rootDir": "src",
-    "declaration": true,
+    "outDir": "plugin",
+    "rootDir": "plugin",
+    "declaration": false,
     "strict": true,
     "esModuleInterop": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
-    "resolveJsonModule": true
+    "allowJs": true,
+    "emitDeclarationOnly": false
   },
-  "include": ["src/**/*"]
+  "include": ["plugin/**/*.ts"],
+  "exclude": ["plugin/**/*.js"]
 }