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.

src/everos/entrypoints/cli/main.py

@@ -0,0 +1,34 @@
+"""everos CLI root entry point.
+
+Exposed as the ``everos`` console script in ``pyproject.toml``. Subcommand
+groups live under :mod:`everos.entrypoints.cli.commands` and are registered
+here.
+
+CLI subcommands run **in-process** — they call into the service layer
+directly rather than through the HTTP API. The HTTP API and CLI are two
+sibling surfaces over the same service layer.
+"""
+
+from __future__ import annotations
+
+import typer
+
+from .commands import cascade, init_cmd, server
+
+app = typer.Typer(
+    name="everos",
+    help="everos — md-first memory extraction framework",
+    no_args_is_help=True,
+    add_completion=False,
+)
+
+app.add_typer(server.app, name="server")
+app.add_typer(cascade.app, name="cascade")
+
+# ``init`` is a top-level leaf command (not a Typer group) — match the
+# idiomatic ``alembic init`` / ``django-admin startproject`` shape.
+init_cmd.register(app)
+
+
+if __name__ == "__main__":
+    app()