chore(deps): bump rmcp 1.4 -> 1.5 for MCP protocol 2025-11-25 support

rmcp 1.5.0 (2026-04-16) ships MCP protocol version 2025-11-25 via upstream
PR modelcontextprotocol/rust-sdk#802. This is the version Claude Desktop's
Cowork and Code-in-Desktop modes require to surface MCP tools; the older
2025-06-18 that rmcp 1.4 topped out on was accepted by the standard chat
client but silently filtered out by the agent-mode clients.

Smoke-tested locally: initialize handshake now returns
protocolVersion "2025-11-25" when the client requests it.

Fixes #20.

Author: devwhodevs

Cargo.lock

@@ -34,7 +34,7 @@ rayon = "1"
 time = { version = "0.3", features = ["parsing", "formatting", "macros"] }
 strsim = "0.11"
 ignore = "0.4"
-rmcp = { version = "1.4", features = ["transport-io"] }
+rmcp = { version = "1.5", features = ["transport-io"] }
 tokio = { version = "1", features = ["macros", "rt-multi-thread", "process", "time", "net"] }
 notify = "7.0"
 notify-debouncer-full = "0.4"