Add cross-dashboard header links (UPLOAD_DASHBOARD_URL, LIVE_DASHBOARD_URL)

AGENTS.md

@@ -48,6 +48,7 @@ PYTHONNOUSERSITE=1 venv/bin/python recounting_dashboard_upload.py
 - **Reset flow**: `POST /api/reset` → deletes state JSON + touches `{SHM_DIR}/.reset`. `batch_store._check_reset_signal()` watches this marker and clears in-memory state on next crossing.
 - **Upload filename contract**: uploads are expected as `batch_XX_YYYYMMDD_HHmmSS.mp4` (XX = batch number, timestamp = date). `recounting_dashboard_upload.py` parses both to query the live API's `/api/day-detail/<YYYY-MM-DD>` for the recorded count.
 - **`RECOUNT_CMD`** in the upload dashboard is a template with a `{path}` placeholder, e.g. `bytetrack-counter config.env --source {path}`; the uploaded file path is `shlex.quote()`d before substitution.
+- **Cross-dashboard header links**: `UPLOAD_DASHBOARD_URL` (live → upload dashboard, `counter_dashboard.py`) and `LIVE_DASHBOARD_URL` (upload → live dashboard, `recounting_dashboard_upload.py`); empty value hides the header link.
 
 ## Code conventions
 

SPEC.md

@@ -54,6 +54,7 @@ env: MIN_OBJECT_PER_BATCH → min count to persist batch (default 60)
 env: MIN_DURATION_PER_BATCH → min seconds to persist batch (default 60)
 env: LIVE_STREAM_ENABLED → write annotated JPEG snapshot each N frames
 env: EXPORT_CSV → write per-crossing CSV (default true)
+env: UPLOAD_DASHBOARD_URL → header link to upload recounting dashboard (default empty → hidden)
 
 ### Recounting dashboard config
 ```
@@ -70,6 +71,7 @@ env: RECOUNTING_UPLOAD_PORT → port for upload UI (default 5003)
 env: UPLOAD_DIR → dir for uploaded MP4s (default <repo>/uploads)
 env: RECOUNT_CMD → replay command template with {path} placeholder (default "bytetrack-counter config.env --source {path}")
 env: RECOUNTING_UPLOAD_TEMPLATE → template (default recounting_upload.html)
+env: LIVE_DASHBOARD_URL → header link to live counter dashboard (default empty → hidden)
 ```
 ```
 
@@ -178,6 +180,7 @@ T12|x|add recounting dashboard — dual-API counter panels, MP4 browser, go2rtc
 T13|x|add template system — DASHBOARD_TEMPLATE env var selects dashboard.html|lamborghini|tesla|
 T14|x|harden reset API — separate SHM marker creation from state file cleanup; return 500 on SHM failure|V20
 T15|x|add upload recounting dashboard — MP4 upload, progress bar, RECOUNT_CMD replay|V21
+T16|x|add cross-dashboard header links — UPLOAD_DASHBOARD_URL (live→upload) & LIVE_DASHBOARD_URL (upload→live)|I.config
 ```
 
 ## §B — Bugs

config.env.example

@@ -159,6 +159,8 @@ SECRET_KEY=change-me-in-production
 DASHBOARD_HOST=0.0.0.0
 # Listen port for the dashboard web UI
 DASHBOARD_PORT=5000
+# URL of the upload recounting dashboard (recounting_dashboard_upload.py); empty hides the header link
+UPLOAD_DASHBOARD_URL=http://localhost:5003
 # Enable Flask debug mode (true/false) — auto-reloads on code changes; disable in production
 FLASK_DEBUG=false
 # Fallback name for the active-batch JSON state file used by the dashboard
@@ -188,3 +190,5 @@ UPLOAD_DIR=/opt/bytetrack-counter/uploads
 RECOUNT_CMD=bytetrack-counter config.env --source {path}
 # Template file for the upload dashboard: "recounting_upload.html" (default)
 RECOUNTING_UPLOAD_TEMPLATE=recounting_upload.html
+# URL of the live counter dashboard (counter_dashboard.py); empty hides the header link
+LIVE_DASHBOARD_URL=http://localhost:5000

counter_dashboard.py

@@ -40,6 +40,7 @@ SHM_DIR = os.getenv("SHM_DIR", "/dev/shm/bytetrack-counter")
 
 SITE_NAME = os.getenv("SITE_NAME", "LIVE")
 TEMPLATE = os.getenv("DASHBOARD_TEMPLATE", "dashboard.html")
+UPLOAD_DASHBOARD_URL = os.getenv("UPLOAD_DASHBOARD_URL", "")
 
 DASHBOARD_PORT = int(os.getenv("DASHBOARD_PORT", "5000"))
 DASHBOARD_HOST = os.getenv("DASHBOARD_HOST", "0.0.0.0")
@@ -132,7 +133,7 @@ def get_counting_date(dt=None, cutoff_str=CUTOFF_TIME):
 
 @app.route("/")
 def index():
-    return render_template(TEMPLATE, site_name=SITE_NAME)
+    return render_template(TEMPLATE, site_name=SITE_NAME, upload_dashboard_url=UPLOAD_DASHBOARD_URL)
 
 
 @app.route("/api/current-batch")

recounting_dashboard_upload.py

@@ -36,6 +36,7 @@ RECOUNT_API_URL = os.getenv("RECOUNT_API_URL", "http://localhost:5001")
 
 SITE_NAME = os.getenv("SITE_NAME", "RECOUNT")
 TEMPLATE = os.getenv("RECOUNTING_UPLOAD_TEMPLATE", "recounting_upload.html")
+LIVE_DASHBOARD_URL = os.getenv("LIVE_DASHBOARD_URL", "")
 
 DASHBOARD_PORT = int(os.getenv("RECOUNTING_UPLOAD_PORT", "5003"))
 DASHBOARD_HOST = os.getenv("DASHBOARD_HOST", "0.0.0.0")
@@ -92,7 +93,7 @@ def _folder_date(filepath, base):
 
 @app.route("/")
 def index():
-    return render_template(TEMPLATE, site_name=SITE_NAME, upload_dir=str(UPLOAD_DIR))
+    return render_template(TEMPLATE, site_name=SITE_NAME, upload_dir=str(UPLOAD_DIR), live_dashboard_url=LIVE_DASHBOARD_URL)
 
 
 @app.route("/api/live-progress")

templates/dashboard.html

@@ -575,6 +575,7 @@
         <span class="date-val" id="current-date">--</span>
         Counting Day
       </div>
+      {% if upload_dashboard_url %}<a class="live-chip" href="{{ upload_dashboard_url }}" target="_blank" rel="noopener" style="text-decoration:none;">RECOUNT UPLOAD</a>{% endif %}
       <div class="live-chip">
         <span class="dot"></span>
         <span>{{ site_name }}</span>

templates/dashboard_lamborghini.html

@@ -408,6 +408,7 @@
         <span class="date-val" id="current-date">--</span>
         Counting Day
       </div>
+      {% if upload_dashboard_url %}<a class="live-chip" href="{{ upload_dashboard_url }}" target="_blank" rel="noopener" style="text-decoration:none;">RECOUNT UPLOAD</a>{% endif %}
       <div class="live-chip">
         <span class="dot"></span>
         <span>{{ site_name }}</span>

templates/dashboard_tesla.html

@@ -418,6 +418,7 @@
         <span class="date-val" id="current-date">--</span>
         Counting Day
       </div>
+      {% if upload_dashboard_url %}<a class="live-chip" href="{{ upload_dashboard_url }}" target="_blank" rel="noopener" style="text-decoration:none;">RECOUNT UPLOAD</a>{% endif %}
       <div class="live-chip">
         <span class="dot"></span>
         <span>{{ site_name }}</span>

templates/recounting_upload.html

@@ -432,6 +432,7 @@
       </div>
     </div>
     <div class="header-right">
+      {% if live_dashboard_url %}<a class="live-chip live-chip-green" href="{{ live_dashboard_url }}" target="_blank" rel="noopener" style="text-decoration:none;">LIVE DASHBOARD</a>{% endif %}
       <div class="live-chip live-chip-green">
         <span class="dot"></span>
         <span>LIVE</span>