Document conversational operations and bound skill worker launches

[highbyte]

The user docs still presented the Wrighty skill mainly as a way to author and implement items, and its launch guidance allowed host-retained continuous workers. This change presents the skill as a conversational alternative to the web console while making backend support and worker ownership explicit.

• Document status summaries, processing-state inspection, workflow actions, and worker controls with example prompts. Distinguish Local Markdown-only Board actions/batches from operations shared with GitHub, whose Issues and Project views remain the planning interface.
• Bump the bundled skill to 0.21.0. Default agent launches to attached --item or --once runs; allow explicitly requested --max-items runs with timeouts. Direct continuous startup to the user's terminal or web console, while preserving skill inspection/drain/interrupt of existing workers. Forbid background or repeated-run substitutes.
• Request readable Markdown tables for multiple items/counts and concise single-item summaries, with raw JSON only when requested. Correct stale CLI-batch and multiple-web-worker documentation.

Validation:

• 40 focused skill-manager and worker-skill-availability tests passed after rebuilding the bundled assets.
• Skill validator, 155 local Markdown links/anchors, and git diff --check passed.
• Two fresh Codex sessions using skill 0.21.0 verified that a continuous-start request produced instructions without a launch, while an explicitly authorized attached two-item run processed exactly two fake-payload items and left the third untouched.
• Three live GitHub checks using the unchanged discovery/batch guidance in skill 0.20.0 verified overview/operations inspection and unsupported batch handling. Actual issue and Project snapshots were unchanged. Worker launch/control against GitHub was outside that smoke-test scope.

The launch restriction is skill guidance; the CLI and web console continue to support continuous workers. No production C# or installed user-scoped skill copies were changed.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud