feat(git-shipping): define PR body as Summary, Evidence, Impact

[h3y6e]

Summary

PR bodies written with git-shipping now have three sections and show changes above the level of the diff, not as a file-by-file list.

Evidence

-## Summary / ## Background / ## Changes / ## Impact
+## Summary   outcome, then why now
+## Evidence  before/after as trees or pseudocode, never copied diff lines; omitted for small diffs
+## Impact    (optional) door, blast radius, reviewer notes

Subagents wrote bodies for h3y6e/anna#7 with each version of the skill. Verbatim excerpts:

Before, ## Changes:

• Add a llamacpp adapter that calls the OpenAI-compatible /v1/embeddings endpoint and orders results by response index.
• Replace --ollama-url and --embedding-model with --embedder-provider, --embedder-url, and --embedder-model. The provider is ollama (default) or llama.cpp; URL and model default per provider.
• Move the config file settings under an [embedder] table (provider, url, model). Env vars follow, e.g. ANNA_EMBEDDER_PROVIDER, ANNA_EMBEDDER_URL.
• Change Dependencies.NewEmbedder to take the provider and return an error; unknown providers fail with unsupported embedder.
• recall resolves embedder settings only for modes that need embeddings, so --mode bm25 ignores an invalid provider.
• Document llama.cpp usage and provider defaults in the README.

After, from ## Evidence:

nrem / recall → resolveEmbedderSettings → deps.NewEmbedder(provider, url, model)
                                            ├ ollama    → ollama adapter
                                            └ llama.cpp → POST {url}/v1/embeddings

Across four PRs (#164, #167, h3y6e/anna#7, h3y6e/anna#13), bodies written with this branch copied 0 diff lines, and the wording-only #167 omitted ## Evidence.

Impact

Two-way door: only agent instructions change.

🤖 Generated with Claude Code