docs(skills): clarify workflow validation and execution diagnostics

[waleedlatif1]

Summary

• Clarify saved workflow state, portable exports, block versions, Function secret syntax, and dry-run versus committed edit results.
• Explain provider identity, tool pagination, bounded run waiting, uncertain outcomes, and nested tool failures using existing CLI commands.
• Discover optional log flags through command help before using them against older clients or servers.

Type of Change

• Documentation

Testing

• Validated all eight skills and checked each new instruction against current CLI/server behavior.
• Package tests, type-check, build, package-content verification, and lint passed.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing (documentation-only change; existing tests passed)
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[waleedlatif1]

@greptile

[waleedlatif1]

@cubic-dev-ai review this PR

[waleedlatif1]

@greptile

[waleedlatif1]

@cubic-dev-ai review this PR