test-self-reindex

Index current tea-rags worktree as separate tea-rags-worktree project alias, verify end-to-end reindexing on worktree's own source. Auto-invoke when user asks to "test reindexing", "проверить реиндексацию", "test tea-rags self-reindex", "регрессия реиндексации", "test self-reindex on worktree", "smoke test enrichment on worktree", or any phrasing meaning "run live tea-rags self-test against current worktree's code".…