feat(ts): add Nowledge Mem resource

[wey-gu]

Summary

Adds a read-only TypeScript resource for Nowledge Mem backed directly by the Nowledge FS API (/fs/*). Nowledge FS is a knowledge tree, not a memory-note folder: a Mirage workspace can mount it at /mem and browse memories, threads, parsed sources, wiki pages, guidance context, Working Memory, feed events, artifacts, and skills through familiar shell-shaped commands.

• ls, cat, and stat for tree discovery and targeted reads; ls and stat now delegate to Mirage's shared generic helpers.
• cat --line/--lines for small evidence windows from large thread/source files.
• find for Nowledge metadata filters.
• grep for exact text search across rendered content.
• recall for semantic recall through Nowledge Mem.

This is intentionally API-only. It does not shell out to the nmem CLI and does not require the CLI to be installed.

Notes

• Requires a Nowledge Mem server that exposes the Nowledge FS API, expected in Nowledge Mem 0.9.0+.
• Rebased on the current TypeScript generic-command refactor in main.
• The resource is read-only; Nowledge Mem remains the source of truth.
• Browser docs recommend a same-origin proxy or short-lived token instead of embedding a long-lived personal API key.
• This PR is draft until the Nowledge Mem 0.9.0 /fs/* API is release-stable.

Validation

Validated with Homebrew node@22 (v22.22.3) because local Node 26 rejects Mirage's --experimental-wasm-jspi test flag.

• pnpm --dir typescript --filter @struktoai/mirage-core exec vitest run src/resource/nowledge_mem/nowledge_mem.test.ts src/types.test.ts
• pnpm --dir typescript --filter @struktoai/mirage-core typecheck
• pnpm --dir typescript --filter @struktoai/mirage-node exec vitest run src/resource/registry.test.ts
• pnpm --dir typescript --filter @struktoai/mirage-browser exec vitest run src/resource/registry.test.ts
• pnpm --dir typescript --filter @struktoai/mirage-core build
• pnpm --dir typescript --filter @struktoai/mirage-node build
• pnpm --dir typescript --filter @struktoai/mirage-browser build
• git diff --check
• Live local Nowledge Mem smoke against http://127.0.0.1:14242 through built @struktoai/mirage-node output: ls /mem, stat /mem/context, and recall "Nowledge Mem" --in /mem/memories -k 2.

[zechengz]

I am doing some refactoring for the ts. Will take a look at this soon :)