* Use observables for the dropdowns in Claude

This makes it wayyyy easier to test as we can trigger the pipeline and see if the expected groups get created.

Co-authored-by: Copilot <copilot@github.com>

* feedback

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Co-authored-by: Copilot <copilot@github.com>

… window (#311281)

* heap-snapshot-analysis skill improvements

* Harden heap snapshot streaming helper

Address review feedback by honoring short reads, documenting tuple reuse with an opt-in copy mode, and guarding eager string parsing for large snapshots.

(Written by Copilot)

Previously CopilotAgent.listSessions() and _listModels() silently
returned [] when no token was available. This violated the AHP
contract (protectedResources required: true mandates the server
return AuthRequired -32007 when used unauthenticated) and caused
agent-host sessions to not appear in the Agents sidebar on fresh
 the renderer cached the empty list and never retried untillaunch
the user sent a message and the resulting sessionAdded notification
forced a refresh.

Both methods now go through _ensureClient(), which already throws
the right ProtocolError. On the renderer side,
LocalAgentHostSessionsProvider already had an autorun on
authenticationPending that triggers _refreshSessions() once auth
settles; that's the natural retry mechanism for the silent
listSessions case (we don't want to interactively prompt the user
just to render the  that's only appropriate forsidebar
createSession).

(Written by Copilot)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

…esent (#311285)

* Implement clearTodoList function and invoke it at session start; hide widget when no todos are present

* Update extensions/copilot/src/extension/chatSessions/copilotcli/common/copilotCLITools.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Fixes

Co-authored-by: Copilot <copilot@github.com>

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <copilot@github.com>