fix(opencode): generate valid tools object and MCP command array for OpenCode schema compliance

[salihdev0]

Fixes issue

Fixes #128, Fixes #129

Changes proposed

Issue #129 — Agent tools field uses invalid string format

OpenCode schema expects tools as object | undefined in agent YAML frontmatter, but noskills init generated a comma-separated string.

Before:

tools: read, write, glob, grep, shell, delegate

After:

tools:
  read: true
  write: true
  glob: true
  grep: true
  shell: true
  delegate: true

Changed in buildExecutorAgentMd() and buildVerifierAgentMd() in opencode.ts.

Issue #128 — MCP config uses invalid command/args structure

OpenCode schema expects command as string[] and requires enabled: boolean, but noskills init generated command as string + args array without enabled.

Before:

{
  "mcp": {
    "noskills": {
      "type": "local",
      "command": "npx",
      "args": ["eser@latest", "noskills", "mcp-serve"]
    }
  }
}

After:

{
  "mcp": {
    "noskills": {
      "type": "local",
      "command": ["npx", "eser@latest", "noskills", "mcp-serve"],
      "enabled": true
    }
  }
}

Changed in OpenCodeMcpEntry type and syncMcp() in opencode.ts.

Tests

Updated 5 existing tests and re-structured 2 validation tests to cover the new schema format. Existing config preservation behavior is unchanged.

Affected files

• pkg/@eserstack/noskills/sync/adapters/opencode.ts
• pkg/@eserstack/noskills/sync/adapters/opencode.test.ts

Check List (Check all the applicable boxes)

• The title of my pull request is a short description of the requested changes.
• My code follows the code style of this project.
• My change requires changes to the documentation.
• I have updated the documentation accordingly.
• This PR does not contain plagiarized content.
• My submissions follows the Submission Rules
• I have read and accepted the Terms and Conditions

Screenshots

Note to reviewers

• All existing tests pass (31/31), lint and type check are clean.
• Existing opencode.json configs with user-added MCP servers are preserved via deep merge — only the noskills entry is overwritten.
• The change is backward-compatible with the noskills manifest format; no migration needed.
• Other coding tool adapters (Claude Code, Codex CLI, Kiro, etc.) are not affected.