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.

.github/ISSUE_TEMPLATE/docs.yml

@@ -0,0 +1,22 @@
+name: Documentation issue
+description: Report unclear, missing, or outdated documentation
+title: "[Docs]: "
+labels: ["documentation"]
+body:
+  - type: input
+    id: page
+    attributes:
+      label: Page or file
+      placeholder: README.md, methods/EverCore/docs/...
+    validations:
+      required: true
+  - type: textarea
+    id: issue
+    attributes:
+      label: What should be improved?
+    validations:
+      required: true
+  - type: textarea
+    id: suggestion
+    attributes:
+      label: Suggested wording or structure