feat: add stateless stdio mcp bridge

[builtbyhuy]

Problem

Fraise has framework-specific memory tools, but MCP hosts do not yet have the stateless stdio bridge required by the v0.1.0 install story.

Changes

• add fraise mcp --url http://localhost:9876 --graph 0 while preserving the existing server command behavior
• expose remember_fact and recall_memory through the official MCP Go SDK
• bind one bridge process to one graph and forward calls to the existing /api/v1/q endpoint
• preflight daemon health before reading stdio and name both service recovery commands on failure
• mark recall read-only and remember non-destructive in MCP tool annotations
• pin query rendering, required input fields, HTTP forwarding, daemon failures, CLI flags, and a real subprocess stdio round trip

Verification

• go test ./...
• make lint-go
• built binary rejects an out-of-range graph and reports the expected daemon recovery commands
• subprocess MCP client connects over stdio and calls recall_memory successfully

Closes #209

[github-actions]

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[RonsenbergVI]

@builtbyhuy thanks for opening a PR, you got here before I did! I overrode this one because we're days from the v0.1.0 release and I didn't want a review round in the way. That was a timing call, not a comment on the PR.

I should have had the issue assigned to me; the repo went public faster than my habits did. They are now, so it won't happen again.

Have a look at first good issues there are plenty of interesting contribution to make. Hope to see your PR soon!