feat: add multi-language support to rss2bsky via --lang flag

- Changed `post_lang: str` to `post_langs: List[str]` in `run_once`
  and `try_send_post_with_variants` to support multiple BCP-47 language
  tags passed to Bluesky's `langs=` field.

- Updated `--lang` CLI argument to accept comma-separated language codes
  (e.g. `--lang ca,es`), parsed into a list at startup. Defaults to `["ca"]`.

- Added startup log line reporting the configured language(s) per run.

jenkins/crunchyRSS

@@ -51,7 +51,8 @@ pipeline {
                         "$BSKY_CRUNCHYROLL_HANDLE" \
                         "$TWITTER_CRUNCHY_EMAIL" \
                         "$BSKY_CRUNCHYROLL_APP_PASSWORD" \
-                        --service "https://eurosky.social"
+                        --service "https://eurosky.social" \
+                        --lang es
                     '''
                 }
             }

rss2bsky.py

@@ -806,7 +806,7 @@ def upload_blob_with_retry(
     return None
 
 
-def try_send_post_with_variants(client: Client, text_variants: List[str], embed, post_lang: str, cooldown_path: str, cfg: AppConfig):
+def try_send_post_with_variants(client: Client, text_variants: List[str], embed, post_langs: List[str], cooldown_path: str, cfg: AppConfig):
     if is_global_post_cooldown_active(cooldown_path):
         reset_str = format_cooldown_until(get_global_post_cooldown_until(cooldown_path))
         raise RuntimeError(f"Posting skipped because global post cooldown is active until {reset_str}")
@@ -819,9 +819,12 @@ def try_send_post_with_variants(client: Client, text_variants: List[str], embed,
                 reset_str = format_cooldown_until(get_global_post_cooldown_until(cooldown_path))
                 raise RuntimeError(f"Posting skipped because global post cooldown is active until {reset_str}")
 
-            logging.info(f"📝 Trying post text variant {idx}/{len(text_variants)} "f"(length={len(variant)} chars)")
+            logging.info(
+                f"📝 Trying post text variant {idx}/{len(text_variants)} "
+                f"(length={len(variant)} chars)"
+            )
             rich_text = make_rich(variant)
-            result = client.send_post(text=rich_text, embed=embed, langs=[post_lang])
+            result = client.send_post(text=rich_text, embed=embed, langs=post_langs)
             return result, variant
 
         except Exception as e:
@@ -1144,15 +1147,13 @@ def login_with_backoff(
             return False
 
     return False
-
-
 def run_once(
     rss_feed: str,
     bsky_handle: str,
     bsky_username: str,
     bsky_password: str,
     service_url: str,
-    post_lang: str,
+    post_langs: List[str],          # ← changed from post_lang: str
     state_path: str,
     cooldown_path: str,
     cfg: AppConfig
@@ -1160,6 +1161,8 @@ def run_once(
     if not PIL_AVAILABLE:
         logging.warning("🟡 Pillow is not installed. External card thumbnail compression is disabled.")
 
+    logging.info(f"🌍 Posting language(s): {post_langs}")
+
     if check_post_cooldown_or_log(cooldown_path):
         return RunResult(published_count=0, stopped_reason="global_post_cooldown_active")
 
@@ -1245,7 +1248,7 @@ def run_once(
                     client=client,
                     text_variants=text_variants,
                     embed=embed,
-                    post_lang=post_lang,
+                    post_langs=post_langs,          # ← changed
                     cooldown_path=cooldown_path,
                     cfg=cfg
                 )
@@ -1296,7 +1299,6 @@ def run_once(
 
     return RunResult(published_count=published)
 
-
 # ============================================================
 # CLI
 # ============================================================
@@ -1309,11 +1311,22 @@ def main():
     parser.add_argument("bsky_username", help="Bluesky username")
     parser.add_argument("bsky_app_password", help="Bluesky app password")
     parser.add_argument("--service", default="https://bsky.social", help="Bluesky server URL")
-    parser.add_argument("--lang", default="ca", help="Language code for the post")
+    parser.add_argument(
+        "--lang",
+        default="ca",
+        help="Comma-separated language codes for Bluesky posts (default: ca). Example: ca,es",
+    )
     parser.add_argument("--state-path", default=DEFAULT_STATE_PATH, help="Path to local JSON state file")
     parser.add_argument("--cooldown-path", default=DEFAULT_COOLDOWN_STATE_PATH, help="Path to shared cooldown JSON state file")
     args = parser.parse_args()
 
+    # Parse comma-separated langs: "ca,es" → ["ca", "es"]
+    post_langs = [lang.strip() for lang in args.lang.split(",") if lang.strip()]
+    if not post_langs:
+        post_langs = ["ca"]
+
+    logging.info(f"🌍 Using configured Bluesky language(s): {post_langs}")
+
     cfg = AppConfig()
 
     run_once(
@@ -1322,7 +1335,7 @@ def main():
         bsky_username=args.bsky_username,
         bsky_password=args.bsky_app_password,
         service_url=args.service,
-        post_lang=args.lang,
+        post_langs=post_langs,          # ← changed
         state_path=args.state_path,
         cooldown_path=args.cooldown_path,
         cfg=cfg