feat: Add relative timestamps and permalinks to comments

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

apiserver/server.py

@@ -14,6 +14,8 @@ import json
 import threading
 import traceback
 import time
+import datetime
+import humanize
 from urllib.parse import urlparse, parse_qs
 
 import settings
@@ -39,6 +41,11 @@ def new_id():
         nid = gen_rand_id()
     return nid
 
+
+def fromnow(ts):
+    return humanize.naturaltime(datetime.datetime.fromtimestamp(ts))
+
+
 build_folder = './build'
 
 css_file = None
@@ -52,6 +59,7 @@ except FileNotFoundError:
     logging.warning('CSS file not found. Run webclient build.')
 
 flask_app = Flask(__name__, template_folder=build_folder, static_folder=build_folder, static_url_path='')
+flask_app.jinja_env.filters['fromnow'] = fromnow
 cors = CORS(flask_app)
 
 @flask_app.route('/api')