Alluvia 0.1.2 — see what's happening

You can now see what alluvia is doing (#4). Long stages used to run silently and
look hung — worst of all a first refresh, which downloads the local
embedding model with no output at all.

• Live progress everywhere it was silent — refresh shows each stage
  (distilling N sessions, embedding, mapping themes, linking) with rich
  progress bars on a terminal and plain line output when piped or in CI.
  ingest shows a running session count.
• Deliberate waits are narrated — when the governor waits out a rate
  limit it says so (⏳ rate-limited: waiting 30s (model)) instead of
  freezing; the first-run embedding-model download announces itself.
• Embeddings run in batches so progress moves (and memory stays flat).
• alluvia --version.
• Issue templates (bug report asks exactly for the refresh summary and
  version; feature template fits both small asks and full RFCs) and a PR
  template with a test-first checklist.
• MCP tools, library callers, and the test suite see zero new output —
  progress is CLI-only by construction.

Install: uv tool install alluvia · PyPI · Closes #4