chore: trim over-explaining comments

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: KJ-11

plugins/composio/hooks/session-start.sh

@@ -33,11 +33,8 @@ else
     cli_status="The local Composio CLI is available and signed in."
   fi
 
-  # Upgrade nudge: read the CLI's own 24h-throttled release cache — a local
-  # file only, never the network. Nudge only for a plain X.Y.Z install that is
-  # strictly older than a plain X.Y.Z latestVersion (the anchored closing quote
-  # rejects prereleases instead of truncating them); anything missing or
-  # malformed degrades to silence.
+  # Upgrade nudge from the CLI's local release cache — never the network.
+  # Stable X.Y.Z versions only; anything missing or malformed stays silent.
   update_cache="${HOME:-}/.composio/update-check.json"
   if [ -f "$update_cache" ]; then
     latest="$(sed -n 's/.*"latestVersion"[[:space:]]*:[[:space:]]*"\([0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}\)".*/\1/p' "$update_cache" 2>/dev/null | head -n 1)"

tests/test_package.py

@@ -169,8 +169,7 @@ def test_readme_documents_the_combined_local_flow(self):
 
 class HookBehaviorTests(unittest.TestCase):
     def run_hook(self, script, payload, tmpdir, path=None):
-        # HOME is pinned to the sandbox so the upgrade-nudge cache read never
-        # sees the developer's real ~/.composio/update-check.json.
+        # HOME is pinned so tests never read the real ~/.composio.
         env = dict(os.environ, TMPDIR=tmpdir, HOME=tmpdir)
         if path is not None:
             env["PATH"] = path
@@ -272,8 +271,6 @@ def session_context(self, tmpdir, path):
         return json.loads(result.stdout)["hookSpecificOutput"]["additionalContext"]
 
     def test_session_start_nudges_upgrade_for_older_stable_cli(self):
-        # SessionStart compares `composio version` against the CLI's own
-        # ~/.composio/update-check.json release cache (local file, no network).
         with tempfile.TemporaryDirectory() as tmpdir:
             self.write_update_cache(
                 tmpdir,