Add end-to-end input/output examples to anchor expected behavior for the
LLM, addressing the Example Quality (2/5) review feedback.
Changes:
- New extensions/dotnet-examples.md with .NET-specific examples: sample
source code, research output, plan output, generated test file, fix
cycle walkthroughs, and final report
- SKILL.md: replace one-liner examples with strategy selection table,
pipeline walkthrough, and pointer to language-specific extensions
- Generator agent: add strategy decision examples and sample final report
- Researcher/Planner/Implementer agents: add references to extension
examples for concrete output shapes
Architecture keeps core agents language-agnostic — all language-specific
examples live in the extensions/ folder.
- Add 'Use when:' trigger phrases to all 7 sub-agent descriptions
so parent agents can reliably discover and delegate to them
- Add .testagent/ cleanup rule to generator agent to prevent
ephemeral pipeline state from being committed