v0.26.0

What's Changed

Shared MCP/Pi dispatch layer (#618): All 7 tools now share a single dispatch
implementation in tools/_dispatchers.ts. Pi and MCP handlers call the same
dispatcher functions, eliminating the dual-maintenance that caused 8 behavioral
differences in #616. mcp/tools.ts reduced from ~450 lines to ~100 lines.
MCP-Pi parity contract tests (#619): 19 contract tests verify that Pi and
MCP tool handlers produce identical output for the same input. Covers all 7
tools with key scenarios: known symbols, file paths, error paths, JSON mode,
path traversal rejection, and mutual exclusion.
Static parity check script (#620): scripts/check-mcp-parity.sh runs 10
grep-based heuristic checks to detect MCP-Pi drift. Wired into scripts/ci.sh
as a non-blocking warning.
AGENTS.md sync rule: Change Map now includes "Modifying an existing tool
handler" — when Pi dispatch logic changes, the MCP handler must be mirrored.

Pi tools refactored: tools/overview.ts, lookup.ts, impact.ts,
verify.ts, changes.ts, format.ts, rename_symbol.ts now delegate
dispatch logic to tools/_dispatchers.ts.
Tests updated: Source-code pattern checks in tests/mcp.test.ts now
verify the dispatcher file instead of the MCP file.

pi install npm:pi-shazam@latest

Or for MCP clients:

{ "mcpServers": { "pi-shazam": { "command": "npx", "args": ["-y", "-p", "pi-shazam@latest", "pi-shazam-mcp"] } } }

Full Changelog: v0.25.0...v0.26.0