[Bug]: Grok provider: skills/slash commands empty; ACP crash on skills-reload (BigInt RequestId)

[Dishah3241]

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

packages/contracts or packages/shared

Steps to reproduce

Install Grok CLI and ensure skills exist under ~/.grok/skills/ (or project .agents/skills/).
2. Confirm native Grok sees them:

grok inspect --json | jq '.skills | length'
also works: open native TUI and type / or /skills

3. Open T3 Code → Grok → Grok 4.5 thread.
4. Open slash/skills menu → empty.
5. Compare Claude thread in T3 → slash commands present.

Expected behavior

Skils should be visible

Actual behavior

Skills are not when we use grok

Impact

Major degradation or frequent failure

Version or commit

No response

Environment

• T3 Code: Desktop Alpha (installed app; Grok driver status ready) - Grok CLI: 0.2.103 (grok agent stdio) - OS: macOS (arm64) - Provider cache (~/.t3/caches/grok.json): status: "ready", models present (grok-4.5, grok-build), but: - "skills": [] - "slashCommands": [] - Claude in the same install: slash commands populate normally (~90 commands)

Logs or stack traces

SyntaxError: Cannot convert skills-reload to a BigInt
    at BigInt (<anonymous>)
    at RequestId (.../effect/.../RpcMessage.js)
    at .../effect/.../RpcClient.js
    at effect-acp/AcpClient.make
    at checkGrokProviderStatus / startSession

Screenshots, recordings, or supporting files

No response

Workaround

Using it in terminal for grok