Add Rain V0 for MeInput full-range chat analysis and delivery tooling.

Introduce rain-service orchestration, browser-safe chat skill filtering, MeInput
adapter helpers, and verify/deploy scripts so Rain mode can summarize recent input
without Memory V2 pollution.

Co-authored-by: Cursor <cursoragent@cursor.com>

rain-service/meinput-full.mjs

@@ -0,0 +1,46 @@
+import { fetchMeinputRangeFull } from '../temporal-recall-service/adapters/meinput.mjs';
+import { resolveCanonicalUserId } from '../user-model-service/canonical-user.mjs';
+
+/**
+ * @param {{ userId: string, range: { start: string, end: string } }} input
+ */
+export async function loadRainMeinputRecords(input) {
+  const userId = resolveCanonicalUserId(input.userId);
+  const records = await fetchMeinputRangeFull({
+    userId,
+    range: input.range,
+  });
+  return { userId, records };
+}
+
+/**
+ * @param {Array<{ event_id?: string, text?: string, app_name?: string | null, app_bundle_id?: string | null, created_at?: string | Date }>} records
+ * @param {{ range?: { start: string, end: string }, label?: string, source?: string }} meta
+ */
+export function formatMeinputFullBlock(records, meta = {}) {
+  const lines = [
+    '【MeInput 原始输入 · Rain】',
+    `时间区间：${meta.label ?? ''} ${meta.range?.start?.slice(0, 16)?.replace('T', ' ') ?? ''} ~ ${meta.range?.end?.slice(0, 16)?.replace('T', ' ') ?? ''}`.trim(),
+    `记录数：${records.length}`,
+    '以下为按时间升序的原始按键/输入片段（含时间戳与应用信息），供分析使用；不要向用户暴露 recall 分数或内部字段名。',
+    '',
+  ];
+
+  if (!records.length) {
+    lines.push('（该时间区间内无 MeInput 记录）');
+    return lines.join('\n').trim();
+  }
+
+  for (const row of records) {
+    const ts =
+      row.created_at instanceof Date
+        ? row.created_at.toISOString()
+        : String(row.created_at ?? '').trim();
+    const local = ts ? ts.slice(0, 19).replace('T', ' ') : '';
+    const app = row.app_name || row.app_bundle_id || 'unknown-app';
+    const text = String(row.text ?? '').replace(/\s+/g, ' ').trim();
+    lines.push(`- ${local} | app=${app} | ${text}`);
+  }
+
+  return lines.join('\n').trim();
+}