docs: fix rules, git-aware mv, install-as-library; agent workflow for mv+fix+check loop

README.md

@@ -28,9 +28,22 @@ jmove's answer:
 ## Install
 
 ```sh
+# From a clone of this repo (installs `jmove` into ~/.cargo/bin, on PATH):
+cargo install --path . --locked
+
+# Latest published version (once jmove is on crates.io — not yet published):
 cargo install jmove
 ```
 
+Use as a library (the CLI and the engine are separate targets; `jmove::core`
+holds indexing/planning/apply, `jmove::parser` the language frontends):
+
+```toml
+[dependencies]
+jmove = { git = "https://github.com/loki5512344/jmove" }
+# or, for a local checkout:  jmove = { path = "../jmove" }
+```
+
 ## Usage
 
 ```sh
@@ -40,12 +53,20 @@ jmove mv src/utils/parser.ts src/core/parser.ts --dry-run
 # Apply it
 jmove mv src/utils/parser.ts src/core/parser.ts
 
+# Inside a git repo a tracked file moves via `git mv` (staged, history kept);
+# --no-git forces a plain rename
+jmove mv src/foo.ts src/bar/foo.ts --no-git
+
 # Java: jmove updates `package`, all `import`s and moves the file
 jmove mv src/com/example/utils/Parser.java src/com/example/core/Parser.java
 
 # Find broken imports (exit code 2 if any)
 jmove check
 
+# Auto-repair import problems (unused + missing imports today) — same dry-run/atomic engine
+jmove fix --dry-run
+jmove fix
+
 # AI-agent workflow
 jmove mv src/foo.ts src/bar/foo.ts --dry-run --json
 jmove mv src/foo.ts src/bar/foo.ts --json
@@ -58,10 +79,10 @@ See [docs/EXAMPLES.md](docs/EXAMPLES.md) for more, and
 ## Roadmap
 
 TypeScript/JavaScript and Java (the open niche) are in — real-world tested
-on `google/guava`. Next: a `fix` command reusing the same dry-run/atomic
+on `google/guava`. `fix` auto-repairs small breakages on the same
-engine to auto-repair small breakages (unused/missing/misordered imports),
+dry-run/atomic engine (unused, missing and misordered Java imports;
-then Python, Go. `split` (automatic file decomposition) is planned — no
+TS rules next), then Python, Go. `split` (automatic file decomposition) is
-tool does it. Full plan: [docs/PLAN.md](docs/PLAN.md).
+planned — no tool does it. Full plan: [docs/PLAN.md](docs/PLAN.md).
 
 ## License
 

docs/EXAMPLES.md

@@ -3,9 +3,11 @@
 Concrete examples for both audiences: humans at a terminal and AI agents
 consuming `--json`. All outputs below are captured from the real binary.
 
-Flags (see `jmove --help`): `mv <source> <target> [--dry-run] [--json]`,
+Flags (see `jmove --help`): `mv <source> <target> [--dry-run] [--json]
-`check [--json]`, and the global `--root <DIR>`. Paths may be relative to
+[--no-git]`, `check [--json]`, and the global `--root <DIR>`. Paths may be
-the root or absolute inside it; `.gitignore`d files are never indexed.
+relative to the root or absolute inside it; `.gitignore`d files are never
+indexed. Inside a git repo, `mv` of a tracked file uses `git mv` (the
+rename is staged); `--no-git` forces a plain filesystem rename.
 Exit codes: `0` ok · `1` operation error · `2` `check` found broken imports.
 
 ## Human usage
@@ -103,6 +105,50 @@ fourth rewrite. Targets outside the source root, non-`.java` targets and
 cross-directory moves of default-package classes are rejected with
 `PLAN_REJECTED` (exit 1) and change nothing.
 
+### Fix: auto-repair unused imports
+
+`fix` runs deterministic rules and applies them through the same
+dry-run/atomic engine. Preview first, then apply:
+
+```console
+$ cat src/main/java/com/example/app/App.java
+package com.example.app;
+
+import com.example.Text;
+import com.example.unused.Ghost;   // never referenced
+
+...
+$ jmove fix --dry-run
+--- src/main/java/com/example/app/App.java
++++ src/main/java/com/example/app/App.java
+@@ -1,6 +1,5 @@
+ package com.example.app;
+
+ import com.example.Text;
+-import com.example.unused.Ghost;
+...
+$ jmove fix
+fixed 1 issue in 1 file
+```
+
+Only provably-dead imports are removed: the whole statement line (with its
+newline) disappears and every other line stays byte-identical. A name that
+also appears in a comment, string literal or a sibling static import is
+kept, so the rule can only under-report, never delete live code. Scope to
+one rule with `--rule java/unused-import` (`java/import-order` sorts the block
+google-style); an unknown id exits `1` with `INVALID_ARGUMENT` and lists the rules.
+
+### Fix: add a missing import for a bare type reference
+
+After a Java `mv` changes a file's package, references to former
+same-package siblings stop resolving. `java/missing-import` inserts the
+import for a unique FQN in the class index; ambiguous ones are reported.
+
+```console
+$ jmove fix --rule java/missing-import
+fixed 1 issue in 1 file   # inserted: import com.example.util.Maths;
+```
+
 ## AI-agent usage (`--json`)
 
 Every `--json` response is a flat envelope: `status` (`"ok"` | `"dry_run"`
@@ -122,6 +168,7 @@ $ jmove mv lib/sum.ts utils/sum.ts --dry-run --json
   "affected_files": [
     "app.ts"
   ],
+  "would_move_via": "fs",
   "diff": "--- app.ts\n+++ app.ts\n@@ -1,4 +1,4 @@\n-import { sum } from \"./lib/sum\";\n+import { sum } from \"./utils/sum\";\n..."
 }
 ```
@@ -151,12 +198,15 @@ $ jmove mv lib/sum.ts utils/sum.ts --json
     }
   ],
   "moved": 1,
-  "updated_imports": 1
+  "updated_imports": 1,
+  "moved_via": "fs"
 }
 ```
 
 `changed_files[].changes[]` lists every rewritten specifier with its
-1-based line; `moved` and `updated_imports` are the counters.
+1-based line; `moved` and `updated_imports` are the counters,
+`moved_via` tells whether the rename went through git (`"git"`, staged)
+or the plain filesystem (`"fs"`).
 
 ### 3. Verify
 

docs/SKILL.md

@@ -18,13 +18,21 @@ kept in sync); Python/Go on the roadmap. Single binary, no LSP needed.
 ### mv — move a file and rewrite its importers
 
 ```
-jmove mv <source> <target> [--root DIR] [--dry-run] [--json]
+jmove mv <source> <target> [--root DIR] [--dry-run] [--json] [--no-git]
 ```
 
 Always run `--dry-run` first and confirm the change set looks right.
 Moving onto an existing path fails with `TARGET_EXISTS` — choose another
 target (Phase 1 has no overwrite mode).
 
+Git integration: inside a git repository, a tracked file is renamed with
+`git mv` so the rename is staged (history-preserving `git log --follow` /
+`git diff -M` work). Untracked files, non-repositories and `--no-git`
+fall back to a plain filesystem rename. The import rewrites land in the
+working tree unstaged either way — stage or commit them yourself.
+`--json` reports the choice as `moved_via` (`"git"`/`"fs"`) and, on a
+dry-run, `would_move_via`.
+
 ### check — find broken imports
 
 ```
@@ -33,6 +41,32 @@ jmove check [--root DIR] [--json]
 
 Run after any move (or any edit) to validate project consistency.
 
+### fix — auto-repair import problems
+
+```
+jmove fix [--root DIR] [--rule ID] [--dry-run] [--json]
+```
+
+Runs the deterministic rules over the whole project and applies the
+repairs through the same atomic engine as `mv` (dry-run diff, rollback,
+exit codes). Current Java rules: `java/unused-import` (deletes single-type
+imports whose name is provably unreferenced), `java/missing-import`
+(inserts the import of a project class used by simple name — unique FQN
+candidate required) and `java/import-order` (Google style: statics first,
+then single-type, ASCII-sorted, duplicates dropped). Unknown `--rule`
+fails with `INVALID_ARGUMENT` and lists the known ids. A candidate the
+engine cannot prove safe is reported with `"applied": false` and a
+`candidates` array of FQN options — resolve it yourself (pick one, add
+the import) and re-run; `fix` never guesses. When two rules want the same
+bytes (order rewrite vs an unused deletion), the urgent rule applies and
+the other is deferred (`"applied": false`, "skipped") — re-run `fix`
+until it reports "nothing to change" (converges in 2–3 runs).
+
+Recommended: `fix --dry-run --json`, inspect `files[].fixes[]`
+(`rule`, `line`, `message`, `applied`, optional `candidates`), then apply
+without `--dry-run`. For Java projects the practical loop is: `mv` →
+`fix` → `fix` again if anything was "skipped" → `check`.
+
 ## Java specifics
 
 - Moving a `.java` file rewrites three coordinated edits: its own
@@ -52,7 +86,9 @@ Run after any move (or any edit) to validate project consistency.
 1. `jmove mv <src> <target> --dry-run --json` — preview.
 2. Inspect `affected_files`; if unexpected, abort and ask the user.
 3. `jmove mv <src> <target> --json` — apply (atomic, rolls back on error).
-4. `jmove check --json` — verify nothing is broken.
+4. Java moves: `jmove fix --json` — heal bare same-package references
+   left behind by the move (they break `javac` otherwise).
+5. `jmove check --json` — verify nothing is broken.
 
 ## Output format (--json)
 

todo.md

@@ -45,14 +45,17 @@
 dry-run/rollback/error-codes не переживают недетерминированный движок).
 AI оставляем СНАРУЖИ: при неоднозначности jmove отдаёт `candidates` в --json,
 агент (LLM) выбирает и повторяет команду — в рамках нашего agent-first UX.
-- [ ] Edit engine: расширить `rewrite_bytes` с замены span до `Edit{span,new}`
+- [x] Edit engine: `core::Edit{span,old_text,new_text}` — replace/insert/delete в одном движке
-      (пустой span = вставка; замена на "" + поглощение `\n` = удаление строки);
+      (`rewrite_bytes` generic над `&[Edit]`, пустой span = вставка, `new_text=""` = удаление;
-      apply/rollback/diff/json трогаются минимально (они уже generic над правками)
+      overlap/malformed spans → PlanRejected, не-char-boundary/content-mismatch → StaleIndex
-- [ ] `Fix` trait рядом с `Language`: `fixes(source, ctx) -> Vec<FixCandidate>`
+      до записи); apply/rollback/diff/json переведены минимально (MovePlan.rewrites → Edit через `From`)
+- [x] `Fix` trait рядом с `Language`: `fixes(path, source, index) -> Vec<FixCandidate>`
       {rule, severity, auto_fixable, edits}; `jmove fix [--rule ...] [--dry-run] [--json]`
-- [ ] Java v1: unused-imports (skip wildcard/ambiguous), import-order (Checkstyle-подобные группы),
+      (тот же apply/rollback/diff: `apply_edits` + `render_edits_diff` без move)
-      missing-import (Type без импорта, ровно 1 кандидат в FQN-индексе → фикс; иначе candidates для агента),
+- [~] Java v1: unused-imports (DONE, skip wildcard/ambiguous), missing-import (DONE: unique FQN candidate →
-      class-name-mismatch
+      insert `import pkg.Type;` at the import-block end; ambiguous/wildcard → `--json` `candidates`, applied:false;
+      закрыт guava-разрыв «перенесли файл, соседняя ссылка без импорта умерла» — проверено mv+fix+javac SUCCESS),
+      import-order (DONE: Google-стиль — statics первыми, ASCII-сортировка, дедуп; конфликтующие с другими правилами откладываются (prune_overlaps по severity) и сходятся за 2-3 прогона), class-name-mismatch
 - [ ] TS v1: unused-imports, import-order; add-import требует индекс экспортов (символ→файл)
 - [ ] Форматирование: свой cargo-fmt НЕ строим (вечный long-tail). Только «import formatting»
       (порядок/группировка — у нас уже есть spans). Опционально `--format-after <cmd>` (prettier /
@@ -69,6 +72,8 @@ AI оставляем СНАРУЖИ: при неоднозначности jmov
       `GwtCompatible` БЕЗ импорта (тот же пакет) → после mv ссылка битая. jmove в v1 осознанно
       НЕ добавляет импорты. Это главный driver для fix/missing-import из Phase 1.6 выше
 - [ ] (после fix) повторить обе перемещения как `mv` + авто-`fix` и добить compile до SUCCESS
+      (паттерн воспроизведён и закрыт локально: mv файла с bare-ссылкой на соседний пакет →
+      `fix` добавил импорт → javac SUCCESS; на реальном guava ещё не прогонялось)
 - [ ] Индексация в monorepo с дублями пакетов (guava vs android/guava в одном --root):
       FQN-коллизии → class_index оставляет первый по сортировке, импорт резолвится не туда.
       Нужен выбор/фильтр source root (например `--source-root` или авто-определение по mv-цели)
@@ -78,7 +83,7 @@ AI оставляем СНАРУЖИ: при неоднозначности jmov
 - [ ] Инкрементальная переиндексация (только изменённые файлы)
 - [ ] Поддержка tsconfig paths / алиасов (@/...)
 - [ ] Параллельная индексация через rayon
-- [ ] --git интеграция (git mv для stage/истории)
+- [x] --git интеграция (git mv для stage/истории): auto для tracked файлов, --no-git флаг, moved_via/would_move_via в --json
 - [ ] Перенос директорий целиком (mv папки)
 - [ ] Предупреждения о не-import ссылках: package.json exports, jest mocks, tsconfig includes, markdown links
 - [ ] prettier интеграция после rewrite (по желанию)
@@ -87,7 +92,10 @@ AI оставляем СНАРУЖИ: при неоднозначности jmov
 - [ ] Поддержка Python (from/import, относительные точки)
 - [ ] Поддержка Go (per-file, НЕ whole-package как refac)
 - [ ] Команда split (авто-разбивка файла на несколько)
-- [ ] Windows-пути (camino/normalize) — CI matrix
+- [x] Windows-пути: `core::rel_str` — единый формат относительных путей на границе CLI
+      (human/JSON/diff-заголовки/git-pathspecs всегда через `/`, не `Path::display()`);
+      CI matrix linux+windows (`cargo test --locked`), checkout с `core.autocrlf=input`.
+      Camino не ввели: PathBuf остаётся внутренней валютой, славши нужен только на выводе
 
 ## Идеи на потом
 - [ ] LSP интеграция (jmove сам как LSP server)