chore: initialize EverOS 1.0.0

md-first memory extraction framework for AI agents.

Markdown is the single source of truth; SQLite holds state and LanceDB
provides the rebuildable vector + BM25 + scalar index. The codebase follows
a single-direction DDD layering (entrypoints -> service -> memory -> infra,
with component / core / config cross-cutting) enforced by import-linter.

Engineering surface:
- Coding conventions in .claude/rules/ (path-scoped) and workflows in
  .claude/skills/ (/commit, /new-branch, /pr).
- GitHub Actions CI runs make lint + test + integration; pre-commit mirrors
  the gates locally (ruff, hygiene hooks, gitlint commit-msg).
- Commit messages follow Conventional Commits, enforced by gitlint.
- make lint also enforces datetime two-zone discipline and OpenAPI drift.

use-cases/claude-code-plugin/hooks/scripts/utils/mock-store.js

@@ -0,0 +1,71 @@
+import { readFileSync } from 'fs';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const DATA_PATH = join(__dirname, '..', '..', '..', 'data', 'mock-memories.json');
+
+let memoriesCache = null;
+
+/**
+ * @typedef {Object} Memory
+ * @property {string} text - The memory content
+ * @property {string} timestamp - ISO timestamp when memory was created
+ */
+
+/**
+ * Load mock memories from JSON file
+ * @returns {Memory[]} Array of memory objects with text and timestamp
+ */
+export function loadMemories() {
+  if (memoriesCache !== null) {
+    return memoriesCache;
+  }
+
+  try {
+    const data = readFileSync(DATA_PATH, 'utf-8');
+    const parsed = JSON.parse(data);
+    memoriesCache = parsed.memories || [];
+    return memoriesCache;
+  } catch (error) {
+    console.error(`[Memory Plugin] Failed to load memories: ${error.message}`);
+    return [];
+  }
+}
+
+/**
+ * Format a timestamp as relative time (e.g., "2h ago", "3 days ago")
+ * @param {string} isoTimestamp - ISO timestamp string
+ * @returns {string} Relative time string
+ */
+export function formatRelativeTime(isoTimestamp) {
+  const now = new Date();
+  const then = new Date(isoTimestamp);
+  const diffMs = now - then;
+
+  const seconds = Math.floor(diffMs / 1000);
+  const minutes = Math.floor(seconds / 60);
+  const hours = Math.floor(minutes / 60);
+  const days = Math.floor(hours / 24);
+  const weeks = Math.floor(days / 7);
+  const months = Math.floor(days / 30);
+
+  if (months > 0) {
+    return months === 1 ? '1 month ago' : `${months} months ago`;
+  }
+  if (weeks > 0) {
+    return weeks === 1 ? '1 week ago' : `${weeks} weeks ago`;
+  }
+  if (days > 0) {
+    return days === 1 ? '1 day ago' : `${days} days ago`;
+  }
+  if (hours > 0) {
+    return hours === 1 ? '1 hour ago' : `${hours}h ago`;
+  }
+  if (minutes > 0) {
+    return minutes === 1 ? '1 min ago' : `${minutes}m ago`;
+  }
+  return 'just now';
+}