feat: add seo diagnostics tool with cli commands, config paths, and static versioning

Add SEO_REPORTS_DIR to config, STATIC_VERSION for cache-busting, seo prune/clear CLI subcommands, tools router with seo job endpoints, and boot-versioned static URLs in Dockerfile and Makefile

devplacepy/config.py

@@ -1,5 +1,6 @@
 # retoor <retoor@molodetz.nl>
 
+import time
 from pathlib import Path
 from dotenv import load_dotenv
 from os import environ
@@ -23,6 +24,7 @@ CONTAINER_WORKSPACES_DIR = DATA_DIR / "container_workspaces"
 ZIPS_DIR = DATA_DIR / "zips"
 ZIP_STAGING_DIR = DATA_DIR / "zip_staging"
 FORK_STAGING_DIR = DATA_DIR / "fork_staging"
+SEO_REPORTS_DIR = DATA_DIR / "seo_reports"
 KEYS_DIR = DATA_DIR / "keys"
 BOT_DIR = DATA_DIR / "bot"
 LOCKS_DIR = DATA_DIR / "locks"
@@ -40,6 +42,12 @@ SESSION_MAX_AGE_REMEMBER = SECONDS_PER_DAY * 30
 PORT = 10500
 SITE_URL = environ.get("DEVPLACE_SITE_URL", "").rstrip("/")
 
+# Cache-busting version stamped onto every app-owned static URL. Computed once at
+# process start, so a restart/deploy changes it and busts every browser cache while
+# assets stay heavily cached (immutable, 1 year) between deploys. Set
+# DEVPLACE_STATIC_VERSION at launch so multiple prod workers share one value.
+STATIC_VERSION = environ.get("DEVPLACE_STATIC_VERSION") or str(int(time.time()))
+
 INTERNAL_BASE_URL = environ.get(
     "DEVPLACE_INTERNAL_BASE_URL", f"http://localhost:{PORT}"
 ).rstrip("/")
@@ -76,6 +84,7 @@ DATA_PATHS: dict[str, Path] = {
     "zips": ZIPS_DIR,
     "zip_staging": ZIP_STAGING_DIR,
     "fork_staging": FORK_STAGING_DIR,
+    "seo_reports": SEO_REPORTS_DIR,
     "keys": KEYS_DIR,
     "bot": BOT_DIR,
     "locks": LOCKS_DIR,