v0.14.7 — developer tooling, durable auth, MCP server

What's New

allsource-inspect CLI

• Rust binary in tooling/allsource-inspect/ that reads Parquet files and WAL logs directly from disk
• Filters by entity_id, event_type, time range; outputs JSON
• Links against allsource-core embedded API — no server process needed

allsource-mcp (Rust stdio MCP server)

• Lightweight Rust MCP server in tooling/allsource-mcp/ using stdio transport
• Wraps EmbeddedCore in read-only mode, points at a --data-dir
• 8 debugging tools: query_events, sample_events, quick_stats, get_snapshot, event_timeline, explain_entity, reconstruct_state, analyze_changes
• Zero Elixir/NIF dependency — pure Rust, works with Claude Code out of the box

Claude Code skills & docs

• allsource-debug skill: inspect projections, query events by entity, trace replay, diagnose stale state
• allsource-data-access skill: reading WAL vs Parquet, storage layout, event schemas
• allsource-mcp-setup skill: configure MCP server for local debugging
• STORAGE_FORMAT.md: WAL binary format (JSON Lines + CRC32), Parquet schema (Arrow columnar), file layout
• PROJECTION_DEBUGGING.md: worked examples for diagnosing stale projections, missing events, duplicates

Other improvements

• Durable API key storage: event-sourced auth repository persists keys to __system stream, survives restarts via WAL/Parquet recovery
• Docker cache optimization: reorder Dockerfile stages so version bumps don't invalidate cargo-chef cook layer
• Clippy fixes: let-chain syntax for collapsible_if in auth.rs

Closes #105.