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.

tests/unit/test_memory/test_extract/test_ingest/test_multimodal.py

@@ -0,0 +1,45 @@
+"""Tests for ingest content coercion + text derivation (tagged rendering)."""
+
+from __future__ import annotations
+
+from everos.memory.extract.ingest.multimodal import (
+    coerce_items,
+    derive_text,
+    normalise_content,
+)
+
+
+def test_coerce_str_to_text_item() -> None:
+    assert coerce_items("hi") == [{"type": "text", "text": "hi"}]
+
+
+def test_derive_text_renders_parsed_nontext_as_tag() -> None:
+    items = [
+        {"type": "text", "text": "before"},
+        {"type": "image", "name": "p.png", "parsed_content": "OCR TEXT"},
+        {"type": "text", "text": "after"},
+    ]
+    text, non_text = derive_text(items)
+
+    assert "[IMAGE: p.png]\nOCR TEXT" in text
+    assert text.startswith("before")
+    assert text.endswith("after")
+    assert non_text == 0
+
+
+def test_derive_text_counts_unparsed_nontext() -> None:
+    text, non_text = derive_text([{"type": "image", "uri": "x"}])
+    assert text == ""
+    assert non_text == 1
+
+
+def test_derive_text_tag_without_name() -> None:
+    text, _ = derive_text([{"type": "pdf", "parsed_content": "DOC"}])
+    assert text == "[PDF]\nDOC"
+
+
+def test_normalise_content_text_only_unchanged() -> None:
+    items, text, non_text = normalise_content("hello")
+    assert items == [{"type": "text", "text": "hello"}]
+    assert text == "hello"
+    assert non_text == 0