[GOWS] POST /api/{session}/chats/{chatId}/messages/{messageId}/pin returns 501 Not Implemented

[grodcur22]

Is your feature request related to a problem? Please describe.

Yes.

Using the GOWS engine, message pinning is not implemented.

Calling:

POST /api/{session}/chats/{chatId}/messages/{messageId}/pin

returns:

501 Not Implemented

with:

"The method is not implemented by 'GOWS' engine"

This is a problem because bots using GOWS can send messages successfully, but cannot pin important messages (welcome messages, rules, onboarding messages, key offers, etc).

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Describe the solution you'd like

Support message pinning in the GOWS engine for:

POST /api/{session}/chats/{chatId}/messages/{messageId}/pin

and ideally also unpin support.

If implementation is not currently planned, then please document explicitly in the engine support matrix that this endpoint is unavailable in GOWS.

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Describe alternatives you've considered

Current alternatives considered:

1. Switch from GOWS to another engine (not ideal).

2. Detect engine=GOWS and disable pin logic in application code (current workaround).

3. Use a fallback behavior in the bot (send message without pinning), but this loses functionality.

None of these are true replacements for native support.

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Additional context

Issue #943 appears related to pinned chats metadata (chat overview), not pinned messages, so this seems to be a separate issue.

Observed real response:

statusCode: 501
error: Not Implemented

Logs:

📌 [PIN] status=501 | ok=False

Engine:
GOWS

Tier:
PLUS