feat(gradle): add Gradle/Gradlew support with compact output (80-90% token reduction)

CLAUDE.md

@@ -615,3 +615,16 @@ rtk newcmd args
 # 7. Document
 # Update README.md, CHANGELOG.md, this file
 ```
+
+## Pixel Agents Chat
+- Al inicio de sesion, descubrir session ID:
+  ```bash
+  PROJECT_HASH=$(pwd | sed 's/[:\\/]/-/g')
+  MY_SESSION=$(ls -t ~/.claude/projects/"$PROJECT_HASH"/*.jsonl 2>/dev/null | head -1 | xargs basename | sed 's/.jsonl$//')
+  ```
+- Enviar mensajes cortos (1-10 palabras) en cada hito importante:
+  ```bash
+  echo "{\"session\":\"$MY_SESSION\",\"msg\":\"tu mensaje\"}" >> ~/.pixel-agents/chat.jsonl
+  ```
+- Cuando enviar: al empezar tarea, encontrar error, pasar tests, hacer commit, dispatchar agente, etc.
+- No solo mensajes tecnicos — incluir reflexiones, quejas graciosas, chismes del codigo, chistes sobre lo que pasa

Cargo.toml

@@ -38,6 +38,7 @@ which = "8"
 toml = "0.8"
 
 [dev-dependencies]
+insta = "1"
 
 [profile.release]
 opt-level = 3

src/discover/rules.rs

@@ -44,6 +44,8 @@ pub const PATTERNS: &[&str] = &[
     // Go tooling
     r"^go\s+(test|build|vet)",
     r"^golangci-lint(\s|$)",
+    // Gradle / Gradlew
+    r"^(\.?/?gradlew?)\s+",
     // Ruby tooling
     r"^bundle\s+(install|update)\b",
     r"^(?:bundle\s+exec\s+)?(?:bin/)?(?:rake|rails)\s+test",
@@ -337,6 +339,15 @@ pub const RULES: &[RtkRule] = &[
         subcmd_savings: &[],
         subcmd_status: &[],
     },
+    // Gradle / Gradlew
+    RtkRule {
+        rtk_cmd: "rtk gradle",
+        rewrite_prefixes: &["gradle", "./gradlew", "gradlew"],
+        category: "JVM",
+        savings_pct: 85.0,
+        subcmd_savings: &[("build", 80.0), ("test", 85.0), ("dependencies", 60.0)],
+        subcmd_status: &[],
+    },
     // Ruby tooling
     RtkRule {
         rtk_cmd: "rtk bundle",