Add exasol-developer-guide-creator marketplace plugin

[abdullah094]

Summary

• Adds the exasol-developer-guide-creator Claude Code skill suite as a git submodule pointing to exasol-labs/exasol-developer-guide-skills
• Adds project-level skill files (.claude/skills/exasol-*.md) for local use
• Updates the submodule to the marketplace-ready commit (skills restructured under skills/*/SKILL.md, .claude-plugin/ config added)
• Includes other documentation updates (Kafka Connector demo, Gen AI text summary, sales forecasting updates)

Install the marketplace plugin

Once merged, users can install the skills via:

/plugin marketplace add exasol-labs/exasol-developer-guide-skills

Test plan

• Verify submodule initializes correctly after clone: git submodule update --init
• Run /plugin marketplace add exasol-labs/exasol-developer-guide-skills in Claude Code
• Confirm all 5 skills are discovered: exasol-developer-guide-creator, exasol-explore, exasol-implement, exasol-modify, exasol-new

🤖 Generated with Claude Code