build: PaddedCell-style install.mjs + SDK-aligned packaging

install.mjs (--install/--build-only/--uninstall/--openclaw-profile-path),
tsconfig outDir dist/fabric, package.json openclaw file dep + main.

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

dist/fabric/src/channel.js

@@ -0,0 +1,46 @@
+import { createChatChannelPlugin, createChannelPluginBase, } from 'openclaw/plugin-sdk/channel-core';
+export function resolveFabricAccount(cfg, accountId) {
+    const section = cfg.channels?.['fabric'];
+    const centerApiBase = section?.centerApiBase;
+    if (!centerApiBase)
+        throw new Error('fabric: channels.fabric.centerApiBase is required');
+    return {
+        accountId: accountId ?? null,
+        centerApiBase,
+        allowFrom: section?.allowFrom ?? [],
+        dmPolicy: section?.dmSecurity,
+    };
+}
+// Outbound is wired by the entry (it needs the identity registry + client to
+// post as the right agent). Channel-turn visible replies go through the
+// inbound adapter's delivery callback; this object owns config/security only.
+export function buildFabricChannelPlugin(sendText) {
+    return createChatChannelPlugin({
+        base: createChannelPluginBase({
+            id: 'fabric',
+            setup: {
+                resolveAccount: resolveFabricAccount,
+                inspectAccount(cfg, accountId) {
+                    const section = cfg.channels?.['fabric'];
+                    const ok = Boolean(section?.centerApiBase);
+                    return { enabled: ok, configured: ok, tokenStatus: ok ? 'available' : 'missing' };
+                },
+            },
+        }),
+        security: {
+            dm: {
+                channelKey: 'fabric',
+                resolvePolicy: (a) => a.dmPolicy,
+                resolveAllowFrom: (a) => a.allowFrom,
+                defaultPolicy: 'allowlist',
+            },
+        },
+        // Fabric replies thread by being posted into the same channel.
+        threading: { topLevelReplyToMode: 'channel' },
+        outbound: {
+            attachedResults: {
+                sendText: async (params) => sendText(params),
+            },
+        },
+    });
+}