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/api/lifespans/__init__.py

@@ -0,0 +1,35 @@
+"""HTTP API lifespan providers.
+
+Concrete :class:`everos.core.lifespan.LifespanProvider` implementations
+for the storage + chassis backends this entrypoint composes. They live next to
+``app.py`` because they are *application-bootstrap* details, not
+generic chassis: a different deployment mode (CLI, embedded, batch
+worker) may compose a different set of providers.
+
+Putting these here also keeps ``core.lifespan`` free of concrete-
+backend imports — the chassis stays portable.
+
+External usage::
+
+    from everos.entrypoints.api.lifespans import (
+        LLMLifespanProvider,
+        SqliteLifespanProvider,
+        LanceDBLifespanProvider,
+        CascadeLifespanProvider,
+        OmeLifespanProvider,
+    )
+"""
+
+from .cascade import CascadeLifespanProvider as CascadeLifespanProvider
+from .lancedb import LanceDBLifespanProvider as LanceDBLifespanProvider
+from .llm import LLMLifespanProvider as LLMLifespanProvider
+from .ome import OmeLifespanProvider as OmeLifespanProvider
+from .sqlite import SqliteLifespanProvider as SqliteLifespanProvider
+
+__all__ = [
+    "CascadeLifespanProvider",
+    "LLMLifespanProvider",
+    "LanceDBLifespanProvider",
+    "OmeLifespanProvider",
+    "SqliteLifespanProvider",
+]