discord-bot: fix "no response", serialize turns, attribution, mentions, post-at-bottom

client.py: send() falls back to ResultMessage.result when no TextBlock streams
(the "(no response)" bug) and reconnects+retries once on a closed SDK session.

message_handler.py: per-thread turn lock so messages arriving mid-turn or from a
second user queue in order (nothing dropped); per-session requester-attribution
env (discord_id -> users.json key), pinned to the thread opener; _USER_MAP caches
only on a successful load; final answer posts as a fresh message at the BOTTOM
(no edit-in-place); a <@id> tag goes out as a fresh send so it actually pings.

main.py: allowed_mentions permits user pings, blocks @everyone/@here/roles.

DISCORD_CLAUDE.md: no thread auto-delete; tiered close-out (Q&A -> one-line rolling
log, substantive -> /save); @mention guidance; opener-pinned attribution note.

whoami-block.sh / sync.sh: bot-context attribution (Executed by ClaudeTools Bot /
Requested by <person>; git author = mapped requester, committer = bot). Strict
no-op for interactive sessions.

users.json: discord_id for Mike/Howard; added Winter Williams (bot-only, full trust).

Reviewed by Code Review Agent + Grok + Gemini (Gemini's "malformed email" finding
verified as a false positive).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude/scripts/sync.sh

@@ -66,6 +66,32 @@ purge_garbled_paths() {
 # then vault) before any commit happens.
 reconcile_git_identity() {
     local want_name="$1" want_email="$2" cur
+    # Bot-context override: when invoked by the Discord bot, attribute the COMMIT
+    # to the human who requested it (git AUTHOR = mapped requester from users.json)
+    # with "ClaudeTools Bot" as the COMMITTER. Unmapped/unknown requester falls
+    # back to bot-as-author. Strict no-op when CLAUDETOOLS_ACTOR is unset, so
+    # interactive sessions keep identity.json attribution.
+    if [ "${CLAUDETOOLS_ACTOR:-}" = "discord-bot" ]; then
+        local _bot_id
+        _bot_id=$("${PYTHON:-python}" - "$REPO_ROOT/.claude/users.json" "${CLAUDETOOLS_REQUESTER_USER:-}" <<'BOTID'
+import json, sys
+usersp, ukey = sys.argv[1], sys.argv[2]
+name, email = "ClaudeTools Bot", "bot@azcomputerguru.com"
+if ukey:
+    try:
+        u = json.load(open(usersp))["users"].get(ukey, {})
+        name = u.get("git_name") or u.get("full_name") or name
+        email = u.get("git_email") or u.get("email") or email
+    except Exception:
+        pass
+print(name + "|" + email)
+BOTID
+)
+        want_name="${_bot_id%%|*}"
+        want_email="${_bot_id##*|}"
+        export GIT_COMMITTER_NAME="ClaudeTools Bot"
+        export GIT_COMMITTER_EMAIL="bot@azcomputerguru.com"
+    fi
     if [ -n "$want_name" ]; then
         cur=$(git config user.name 2>/dev/null || true)
         if [ "$cur" != "$want_name" ]; then