fix(whatsapp): include quoted reply context

[mgonto]

Summary

• Extract quoted WhatsApp message text in the bridge and forward it with inbound events
• Populate MessageEvent.reply_to_text / reply_to_message_id in the WhatsApp adapter
• Add regression coverage for bridge extraction, sanitization, adapter mapping, and agent-visible reply context

Test plan

• node --test scripts/whatsapp-bridge/*.test.mjs
• node --check scripts/whatsapp-bridge/bridge.js && node --check scripts/whatsapp-bridge/message-utils.js
• python3 -m py_compile gateway/platforms/whatsapp.py
• scripts/run_tests.sh tests/gateway/test_whatsapp_reply_context.py
• scripts/run_tests.sh tests/gateway/test_whatsapp_*.py

[alt-glitch]

Duplicate of #16552 (earliest open PR for the same fix) — extract the quoted WhatsApp message text in the bridge and populate MessageEvent.reply_to_text/reply_to_message_id in the adapter. Same quoted-reply gap as #38382/#28823 (merged #25489 surfaced bridge metadata).

[liuhao1024]

✅ Verified — WhatsApp quoted reply context

Reviewed the diff for _sanitize_reply_context_text and the reply context integration in _build_message_event.

• _sanitize_reply_context_text correctly strips control characters (\x00-\x1f, \x7f), collapses whitespace, and bounds output to 1000 chars with ellipsis truncation. This prevents quoted text from corrupting the synthetic [Replying to: "..."] prefix.
• quotedMessageId fallback (f"quoted:{messageId}") ensures reply context remains usable when the backend only provides quoted text without a stanza ID.
• Bridge.js refactors getMessageContent, getContextInfo, and extractQuotedMessageText into message-utils.js — clean extraction, no logic changes to existing message parsing.
• Reply context fields (reply_to_message_id, reply_to_text) correctly set to None when empty, matching the MessageEvent constructor expectations.

No issues found.

[teknium1]

Thanks for the quoted-reply context work. This is already implemented on current main, so closing as superseded. This is an automated hermes-sweeper review.

• scripts/whatsapp-bridge/bridge_helpers.js:310-317 extracts quotedMessageId, quotedText, and reply metadata from the Baileys context.
• plugins/platforms/whatsapp/adapter.py:1438-1455,1504-1517 maps that data to MessageEvent.reply_to_message_id and reply_to_text.
• gateway/run.py:10592-10606 renders the agent-visible reply-context prefix.
• The regression coverage is in scripts/whatsapp-bridge/bridge.native.test.mjs:64-101.
• The implementation landed in 11627fdcb92a0ad57c9b637538f8fbea39142272 and is contained in v2026.7.7. This also supersedes the duplicate gap noted in the prior discussion.