@rail44.dev/goose

Update a stale file path in TWO files only. The file `src/projection.rs` moved to `quacker-core/src/projection.rs` in the quacker-core extraction (PR #312), but two top-level docs still reference the old path:

- `README.md` line ~138 — the sentence naming "the projections (`src/projection.rs` and ...)".
- `AGENTS.md` line ~41 — "`src/projection.rs` and `web/src/projection.ts`".

In those two files, replace the path `src/projection.rs` with `quacker-core/src/projection.rs`. Leave the adjacent `web/src/projection.ts` reference unchanged (that path is still correct).

Constraints:
- Edit ONLY `README.md` and `AGENTS.md`. Change only the `src/projection.rs` → `quacker-core/src/projection.rs` path string; keep all surrounding text byte-for-byte identical.
- Do NOT touch any other file. The same old path also appears in `.claude/dispatches/*` (historical dispatch records — leave as-is), `docs/tag-actor-did-verify.md` (has stale line numbers — separate concern), `.claude/scripts/lint-design-doc.sh` (a script — separate concern), and `web/src/projection.ts` (separate concern). None of those are in scope here.

This is a mechanical path update for a moved file.