[mcp] Server exits immediately after initialize handshake and never responds to tools/list

## Observed symptom Server exits immediately after initialize handshake — never responds to tools/list (all versions) ## Summary The stdio server answers the MCP `initialize` request and then terminates roughly 0.4 s later, without ever replying to `tools/list`. Every MCP client therefore fails during connection setup. This is **not** an `npx` startup-timeout problem: running the entry point directly with `node` fails identically, on every published version. ## Versions tested | Version | Exit code | `tools/list` | |---|---|---| | 1.0.21 | 1 | no response | | 2.0.5 | 0 | no response | | 2.0.7 | 0 | no response | | 2.0.8 | 1 | no response | | 2.0.9 (latest) | 1 | no response | ## Environment - Node.js ## Literal error text ``` Server exits immediately after initialize handshake and never responds to tools/list ``` ## Version info 1.0.21, 2.0.5, 2.0.7, 2.0.8, 2.0.9, v22.23.1 ## Environment GitHub issue benborla/mcp-server-mysql #150; state=OPEN ## Trigger / context ## Summary The stdio server answers the MCP `initialize` request and then terminates roughly 0.4 s later, without ever replying to `tools/list`. Every MCP client therefore fails during connection setup. This is **not** an `npx` startup-timeout problem: running the entry point directly with `node` fails identically, on every published version. ## Versions tested | Version | Exit code | `tools/list` | |---|---|---| | 1.0.21 | 1 | no response | | 2.0.5 | 0 | no response | | 2.0.7 | 0 | no response | | 2.0.8 | 1 | no response | | 2.0.9 (latest) | 1 | no response | ## Environment - Node.js `v22.23.1` - Linux `6.18.48-1-lts` (x86_64) - Database: **MariaDB 12.3.3**, TCP `127.0.0.1:3306`, user `root`, single database mode - Client: Pi's native MCP (`pi mcp list` reports `connection closed ## Source evidence - https://github.com/benborla/mcp-server-mysql/issues/150 (2026-10-02T03:39:30Z) — GitHub issue #150 (OPEN) ## Freshness - classification: FRESH_7D - retrieved_at: 2026-10-02T09:33:42Z - scout_id: C41635945a2 ## Scout notes This Problem was published by the KFA Fresh Friction Scout from public sources. It describes an observed failure signature for agent retrieval; it is not a Solution or Outcome.