The "Manifest" section now describes the per-file MD layout under
~/.claude-bottle/{bottles,agents}/, the filename-as-key convention,
the YAML subset constraints, and the trust boundary (bottles are
home-only by filesystem layout). Includes a working bottle example
with comments inside the frontmatter and a working agent example
showing the Markdown body as the system prompt.
Drops claude-bottle.example.json. The new examples/ tree —
examples/bottles/dev.md, examples/agents/implementer.md,
examples/agents/researcher.md — verifies the parser end-to-end via
Manifest.from_md_dirs(examples/, None).
