+ doc: add referral link;

* test: separate stap property based test;

+ test: add mutational tests;

+ test: add property-based tests;

+ lint: add golangci.yml;

* aitools: refactoring aitools and ragcore;

* all: refactoring;

* ci: use golang/govulncheck-action@v1;

+ app: add self-update command;

+ e2e: add verbose test;

! app: add interaction mode;

+ hybid: add fast path for small files;

+ e2e: add e2e tests;

* test: clean up duplicated and cross-package ownership checks;

* refactor: deduplicate tool arg handling and shared sanitization;