feat(ambient-ui): Dashboard, agent detail, multi-session sidebar, responsive layout (#1647)

## Summary

Major ambient-ui feature batch: Dashboard landing page, agent detail
page with CRUD, enhanced sessions table, keyboard navigation, unified
multi-session chat sidebar, and responsive layout.

### Dashboard (default landing page)
- Attention banner surfacing failed sessions, needs-review, needs-input
- Active work cards grouped by Jira/PR annotations
- Recent activity feed with last 10 completed sessions
- Sidebar badge count for items needing attention
- Container-query responsive layout for narrow widths

### Agent detail page
- Full page at `/{projectId}/agents/{agentId}` with Manifest + Run
History tabs
- Manifest tab: editable config form + live YAML preview + annotations
- Run History: compact table, click opens session in sidebar
- Agent CRUD: create, update, delete with lifecycle badges
(Unmanaged/GitOps)
- "Run Test Session" popover creates session and opens in sidebar

### Multi-session chat sidebar
- Unified chat sidebar replaces broken test session pane
- Tab strip with phase-colored dots, session names, close-per-tab
- Always-visible tabs even with single session
- "+" button opens agent picker popover for quick session creation
- Test mode toolbar (re-run, save, delete) when session has test
annotation
- Collapsed state: vertical dot stack with tooltips
- Cap at 8 concurrent sessions

### Sessions table enhancements
- Work Item column (Jira/PR/MR/Gerrit chips)
- Review Status column (colored badges)
- Bulk operations (stop/delete with confirmation)
- Timestamp toggle (relative/absolute)
- Test session "test" badge
- Agent name as clickable link to agent detail
- "Show test runs" toggle (hidden by default)

### Other
- Sidebar restructured into Operate/Build nav groups
- Keyboard navigation: j/k row nav, Cmd+K command palette, Escape-back
- Centralized model options matching runner's VERTEX_MODEL_MAP
- Git commit SHA in sidebar footer
- API server fix: agent PATCH now persists all fields (display_name,
repo_url, llm_model, description, llm_temperature, llm_max_tokens)

## Test plan
- [ ] Dashboard renders attention banner for failed/needs-input sessions
- [ ] Agent detail page: edit config, save, verify YAML updates
- [ ] Run Test Session creates session and opens in sidebar
- [ ] Multiple sessions open as tabs in sidebar, switching works
- [ ] "+" button lists agents, creates session on click
- [ ] Sessions table: Work Item and Review columns render
- [ ] Bulk select + stop/delete works
- [ ] Test sessions filtered from main Sessions page by default
- [ ] Cmd+K opens command palette
- [ ] Dashboard responsive when sidebar is open

🤖 Generated with [Claude Code](https://claude.com/claude-code)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Full project-scoped agent CRUD UI (create sheet, detail page with
Manifest/Overview/Config/Sessions tabs), agent YAML export/download,
test-session flows, command palette, multi-session chat sidebar,
dashboard widgets (Attention, Active Work, Recent Activity)

* **Improvements**
* Bulk session actions, richer fleet/agents tables (work-item, agent
links, review badges, test-run toggle, time-format toggle), keyboard
table navigation, session creation accepts annotations, agent metadata
and LLM settings are surfaced and patchable

* **Chores**
  * UI displays short git commit hash from build environment
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: 3 people

components/ambient-api-server/plugins/agents/factory_test.go

@@ -4,7 +4,9 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/ambient-code/platform/components/ambient-api-server/pkg/api/openapi"
 	"github.com/ambient-code/platform/components/ambient-api-server/plugins/agents"
+	"github.com/openshift-online/rh-trex-ai/pkg/api/presenters"
 	"github.com/openshift-online/rh-trex-ai/pkg/environments"
 )
 
@@ -24,6 +26,22 @@ func newAgent(name string) (*agents.Agent, error) {
 	return sub, nil
 }
 
+func newAgentWithProject(name string, projectID string) (*agents.Agent, error) {
+	agentService := agents.Service(&environments.Environment().Services)
+
+	agent := &agents.Agent{
+		ProjectId: projectID,
+		Name:      name,
+	}
+
+	sub, err := agentService.Create(context.Background(), agent)
+	if err != nil {
+		return nil, fmt.Errorf("agents.Create: %s", err.Error())
+	}
+
+	return sub, nil
+}
+
 func newAgentList(namePrefix string, count int) ([]*agents.Agent, error) {
 	var items []*agents.Agent
 	for i := 1; i <= count; i++ {
@@ -37,10 +55,35 @@ func newAgentList(namePrefix string, count int) ([]*agents.Agent, error) {
 	return items, nil
 }
 
+func presentAgent(agent *agents.Agent) openapi.Agent {
+	reference := presenters.PresentReference(agent.ID, agent)
+	return openapi.Agent{
+		Id:             reference.Id,
+		Kind:           reference.Kind,
+		Href:           reference.Href,
+		CreatedAt:      openapi.PtrTime(agent.CreatedAt),
+		UpdatedAt:      openapi.PtrTime(agent.UpdatedAt),
+		ProjectId:      agent.ProjectId,
+		ParentAgentId:  agent.ParentAgentId,
+		OwnerUserId:    openapi.PtrString(agent.OwnerUserId),
+		Name:           agent.Name,
+		DisplayName:    agent.DisplayName,
+		Description:    agent.Description,
+		Prompt:         agent.Prompt,
+		RepoUrl:        agent.RepoUrl,
+		WorkflowId:     agent.WorkflowId,
+		LlmModel:       openapi.PtrString(agent.LlmModel),
+		LlmTemperature: openapi.PtrFloat64(agent.LlmTemperature),
+		LlmMaxTokens:   openapi.PtrInt32(agent.LlmMaxTokens),
+	}
+}
+
 func stringPtr(s string) *string { return &s }
 
 var (
 	_ = newAgent
+	_ = newAgentWithProject
 	_ = newAgentList
+	_ = presentAgent
 	_ = stringPtr
 )

components/ambient-api-server/plugins/agents/handler.go

@@ -74,9 +74,27 @@ func (h agentHandler) Patch(w http.ResponseWriter, r *http.Request) {
 			if patch.Name != nil {
 				found.Name = *patch.Name
 			}
+			if patch.DisplayName != nil {
+				found.DisplayName = patch.DisplayName
+			}
+			if patch.Description != nil {
+				found.Description = patch.Description
+			}
 			if patch.Prompt != nil {
 				found.Prompt = patch.Prompt
 			}
+			if patch.RepoUrl != nil {
+				found.RepoUrl = patch.RepoUrl
+			}
+			if patch.LlmModel != nil {
+				found.LlmModel = *patch.LlmModel
+			}
+			if patch.LlmTemperature != nil {
+				found.LlmTemperature = *patch.LlmTemperature
+			}
+			if patch.LlmMaxTokens != nil {
+				found.LlmMaxTokens = *patch.LlmMaxTokens
+			}
 			if patch.Labels != nil {
 				found.Labels = patch.Labels
 			}