diff --git a/Dockerfile b/Dockerfile
index aae61d4..bd2d162 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,6 +15,17 @@ COPY help_processor.py /app/help_processor.py
 COPY help_codes.py /app/help_codes.py
 COPY Bairaci.png /app/Bairaci.png
 
+# Git SHA after COPY so pip layer stays cached.
+# Coolify: Advanced → Include Source Commit in Build = ON
+# (или Build ARG GIT_SHA). Иначе се ползва hash на копираните файлове.
+ARG SOURCE_COMMIT=
+ARG GIT_SHA=
+RUN GIT_SHA="$GIT_SHA" SOURCE_COMMIT="$SOURCE_COMMIT" python -c 'import hashlib,os,pathlib,sys; sha=(os.environ.get("GIT_SHA") or os.environ.get("SOURCE_COMMIT") or "").strip(); h=hashlib.sha1(); \
+[h.update(p.as_posix().encode()+p.read_bytes()) for p in sorted(pathlib.Path("/app").rglob("*")) if p.is_file() and "/__pycache__/" not in p.as_posix() and p.name!="BUILD_ID"]; \
+pathlib.Path("/app/BUILD_ID").write_text(sha or h.hexdigest()[:12], encoding="utf-8"); \
+print("BUILD_ID", pathlib.Path("/app/BUILD_ID").read_text(), file=sys.stderr)'
+ENV APP_GIT_SHA=${GIT_SHA}
+
 ENV OUTPUT_DIR=/mnt/mssql/share/RIP/RIP_Help_Source/Output
 ENV HOME_IMAGE=/app/Bairaci.png
 ENV HELP_REMOTE_ROOT=/mnt/mssql/share/RIP/RIP_Help_Source/Output
diff --git a/webapp/main.py b/webapp/main.py
index 677d444..5472b44 100644
--- a/webapp/main.py
+++ b/webapp/main.py
@@ -9,12 +9,13 @@ Endpoint-и:
     GET  /api/search           — търсене (?q=&prefix=)
     GET  /api/section/{code}   — една секция с пълен текст
     POST /api/keywords/{code}  — обновяване на keywords
-    GET  /healthz              — health + OUTPUT_DIR статус
+    GET  /healthz              — health + OUTPUT_DIR статус + version/git
 
 Env:
     HELP_DB_CONN   — libpq Postgres
     OUTPUT_DIR     — локален/mounted път към секциите (default: share)
     HOME_IMAGE     — път към home картинка
+    GIT_SHA / SOURCE_COMMIT / COMMIT_SHA — git SHA (Coolify / Docker build-arg)
 """
 
 from __future__ import annotations
@@ -22,6 +23,7 @@ from __future__ import annotations
 import json
 import os
 import re
+import subprocess
 from datetime import datetime
 from pathlib import Path
 from typing import Optional
@@ -56,9 +58,56 @@ HOME_IMAGE = os.getenv("HOME_IMAGE")  # absolute path or None
 _IMG_PLACEHOLDER_RE = re.compile(r"\[IMG:\s*([^\]]+?)\s*\]")
 
 BASE_DIR = Path(__file__).parent
+APP_VERSION = "0.3.0"
+_NO_CACHE = {"Cache-Control": "no-store, no-cache, max-age=0"}
+
+
+def _short_id(value: str, n: int = 7) -> str:
+    value = value.strip()
+    if not value:
+        return ""
+    return value[:n] if len(value) > n else value
+
+
+def _resolve_git() -> str:
+    """Git SHA / build id that changes on each image rebuild.
+
+    Prefers Coolify/runtime env, then /app/BUILD_ID (baked in Docker),
+    then local ``git rev-parse``.
+    """
+    for key in ("GIT_SHA", "APP_GIT_SHA", "SOURCE_COMMIT", "COMMIT_SHA"):
+        raw = (os.getenv(key) or "").strip()
+        if raw and raw.lower() not in {"unknown", "none", "null"}:
+            return _short_id(raw)
+    build_id = Path("/app/BUILD_ID")
+    if build_id.is_file():
+        try:
+            text = build_id.read_text(encoding="utf-8").strip()
+            if text:
+                return _short_id(text, 7 if len(text) >= 40 else 12)
+        except OSError:
+            pass
+    try:
+        repo = BASE_DIR.parent
+        r = subprocess.run(
+            ["git", "rev-parse", "--short=7", "HEAD"],
+            cwd=str(repo),
+            capture_output=True,
+            text=True,
+            timeout=1,
+        )
+        if r.returncode == 0 and r.stdout.strip():
+            return r.stdout.strip()
+    except (OSError, subprocess.SubprocessError):
+        pass
+    return "dev"
+
+
+GIT_SHA = _resolve_git()
+
 from webapp import rescan as rescan_mod
 
-app = FastAPI(title="RIP Help System", version="0.3.0")
+app = FastAPI(title="RIP Help System", version=APP_VERSION)
 templates = Jinja2Templates(directory=str(BASE_DIR / "templates"))
 app.include_router(rescan_mod.router)
 
@@ -502,7 +551,7 @@ def api_delete_file_extractions(
         conn.close()
 
 
-@app.get("/healthz", summary="Статус на услугата и БД; output_dir_ok, txt_count.")
+@app.get("/healthz", summary="Статус на услугата и БД; version/git, output_dir_ok, txt_count.")
 def healthz():
     db_status = "ok"
     try:
@@ -513,8 +562,16 @@ def healthz():
         conn.close()
     except Exception as e:
         return JSONResponse(
-            {"status": "error", "db": str(e), "output_dir": str(OUTPUT_DIR)},
+            {
+                "ok": False,
+                "status": "error",
+                "version": f"{APP_VERSION}+{GIT_SHA}",
+                "git": GIT_SHA,
+                "db": str(e),
+                "output_dir": str(OUTPUT_DIR),
+            },
             status_code=503,
+            headers=_NO_CACHE,
         )
 
     out_ok = OUTPUT_DIR.is_dir()
@@ -528,11 +585,17 @@ def healthz():
         except Exception:
             pass
 
-    return {
-        "status": "ok",
-        "db": db_status,
-        "output_dir": str(OUTPUT_DIR),
-        "output_dir_ok": out_ok,
-        "txt_count": txt_count,
-        "sample": sample,
-    }
+    return JSONResponse(
+        {
+            "ok": True,
+            "status": "ok",
+            "version": f"{APP_VERSION}+{GIT_SHA}",
+            "git": GIT_SHA,
+            "db": db_status,
+            "output_dir": str(OUTPUT_DIR),
+            "output_dir_ok": out_ok,
+            "txt_count": txt_count,
+            "sample": sample,
+        },
+        headers=_NO_CACHE,
+    )
diff --git a/webapp/templates/viewer.html b/webapp/templates/viewer.html
index b8bf349..7e240df 100644
--- a/webapp/templates/viewer.html
+++ b/webapp/templates/viewer.html
@@ -476,7 +476,7 @@
       <p>JSON API за четене на help секции, търсене и (опционално) rescan. Готово за връзка с външни системи.</p>
 
       <div class="api-ep"><span class="method">GET</span><code>/healthz</code>
-        <div class="desc">Статус на услугата и БД; <code>output_dir_ok</code>, <code>txt_count</code>.</div></div>
+        <div class="desc">Статус на услугата и БД; <code>version</code>, <code>git</code>, <code>output_dir_ok</code>, <code>txt_count</code>.</div></div>
       <div class="api-ep"><span class="method">GET</span><code>/api/sections?prefix=RIP</code>
         <div class="desc">Списък секции (метаданни + preview текст). Филтър по <code>prefix</code>.</div></div>
       <div class="api-ep"><span class="method">GET</span><code>/api/search?q=…&amp;prefix=RIP</code>