Filter the agent profile dropdown in both the Create Task dialog and the
New Session dialog to only show agents that are actually configured for
the selected executor profile.
For local/worktree executors, no gating (agents need no extra creds).
For Docker/Sprites profiles, an agent is "configured" iff one of its
remote-auth methods has a value in `remote_credentials` or a non-null
secret in `remote_auth_secrets`. Agents without an entry in the remote
auth catalog (Copilot, Amp, OpenCode, TUI, mock) cannot carry creds on
remote executors and are blocked.
Spec IDs match `AgentProfileOption.agent_name` (the registry-type string
like "claude-acp"); `agent_id` is a DB UUID and unrelated to the catalog.
The Create Task footer surfaces a "No agent profile is configured for X"
tooltip and disables submit when the selected executor profile has no
compatible agents. The New Session dialog auto-swaps to the first
compatible agent and shows the same banner inline.
`useRemoteAuthSpecs` returns a `loaded` flag so callers don't filter
during the initial fetch (would otherwise hide everything).
José Almeida
cbfff9bc8a