Adds adapters/claude/rule-skills.tsv, mapping each technology- or
situation-specific rule to a Claude skill name and trigger description.
Replaces the hardcoded rule-loading block in the shared instructions
template with a __RULE_LOADING__ placeholder so each client's build step
can substitute its own loading mechanism without duplicating the shared
orchestration text.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>