The 'Always Allow' button is now driven entirely by the server-supplied
allowed_decisions palette. The card no longer peeks at
context.mcp_connector_id to decide whether to render the button, and no
longer fires a separate trust-tool HTTP call on click - one
{type: 'approve_always'} dispatch is enough; the agent middleware
handles the in-memory promotion and (for MCP tools) the database save
via its trusted_tool_saver callback.
Drops the dead trustMCPTool / untrustMCPTool service helpers - they had
no remaining callers after this rework. The backing HTTP routes are
kept on the server as a programmatic surface.
Renames the SurfSense HITL extension decision-type from "always" to
"approve_always" so it sits in the same verb-first family as "approve",
"reject", and "edit". The Python constant is now SURFSENSE_DECISION_APPROVE_ALWAYS;
the wire value, the permission-domain decision_type, and the FE union members
all match (no wire/internal mismatch).
Both the multi_agent_chat permission middleware and the legacy new_chat one
accept the new wire value; the FE types.ts union is updated accordingly.
The "context.always" payload key is intentionally left untouched - it's the
patterns-to-promote field, semantically distinct from the decision type.
