[management] Add Agent Network access roles and self-service endpoints

Delegating Agent Network today means handing out full account admin, and
regular users cannot see their own usage or how to connect a local tool.

Add two roles on top of the existing agent_network permission
submodules. agent_network_admin owns the whole area (providers,
policies, guardrails, budgets, usage, logs, settings) with read-only
users, groups, peers, and account info needed to build policies, and
nothing else in the account. usage_viewer is the regular User baseline
plus read on the aggregated usage and cost overview: no provider
configuration, no policies, no request-level logs, which can contain
captured prompts. billing_admin gets a proper permission-map entry with
the User baseline so role resolution stops failing with role-not-found;
its plan and invoice permissions stay enforced cloud-side.

Add the self-service endpoints behind the "My Agent Network" view,
available to every authenticated user because both answers are scoped
strictly to the caller. GET /api/agent-network/me/setup returns the
account endpoint plus the providers and models the caller's own groups
authorize, computed with the same rules the proxy enforces: policy
filtering as in policy selection, model allowlist union intersected
with declared models, orphan and disabled providers omitted. Not set up
and no access are deliberately indistinguishable, and the response
carries display metadata only. GET /api/agent-network/me/consumption
returns the caller's own user-dimension counters.

Linear: NET-1399

shared/management/http/api/openapi.yml

@@ -5729,6 +5729,57 @@ components:
       required:
         - name
         - checks
+    AgentNetworkMeSetup:
+      type: object
+      description: The caller-scoped Agent Network connection info backing the "My Agent Network" self-service view. Available to every authenticated user; the answer is computed from the caller's own groups and carries display metadata only.
+      properties:
+        configured:
+          type: boolean
+          description: False when the account has no Agent Network set up or the caller's groups authorize none of it. The two cases are deliberately indistinguishable.
+        endpoint:
+          type: string
+          description: The account's Agent Network base URL, reachable over the NetBird tunnel only. Empty when configured is false.
+          example: https://calm-otter.proxy.example.com
+        providers:
+          type: array
+          description: The providers at least one of the caller's policies authorizes, in creation order.
+          items:
+            $ref: '#/components/schemas/AgentNetworkMeProvider'
+      required:
+        - configured
+        - endpoint
+        - providers
+    AgentNetworkMeProvider:
+      type: object
+      description: One provider the caller may use, reduced to what a local tool needs for configuration.
+      properties:
+        name:
+          type: string
+          description: Operator-assigned provider label.
+          example: Bedrock prod
+        catalog_id:
+          type: string
+          description: Catalog entry id naming the provider type.
+          example: bedrock_api
+        api_flavor:
+          type: string
+          description: Request-body shape the provider speaks ("anthropic", "openai"). Empty when the gateway dispatches it by URL path instead.
+          example: anthropic
+        all_models_allowed:
+          type: boolean
+          description: True when no model allowlist restricts this provider for the caller; models then lists the declared or catalog models as a courtesy.
+        models:
+          type: array
+          description: The effective model allowlist for the caller (or the declared/catalog models when all_models_allowed is true).
+          items:
+            type: string
+          example: [ "anthropic.claude-sonnet-4-5" ]
+      required:
+        - name
+        - catalog_id
+        - api_flavor
+        - all_models_allowed
+        - models
     AgentNetworkConsumption:
       type: object
       description: One per-(dimension, window) consumption counter row. The proxy ticks one row per dimension on every served LLM request; the dashboard reads this listing to surface live counter growth.
@@ -13723,6 +13774,46 @@ paths:
           "$ref": "#/components/responses/forbidden"
         '500':
           "$ref": "#/components/responses/internal_error"
+  /api/agent-network/me/setup:
+    get:
+      summary: Retrieve the caller's Agent Network setup
+      description: Returns everything the caller needs to configure a local AI tool and nothing more - the account's Agent Network endpoint plus the providers and models the caller's own policies allow. Available to every authenticated user regardless of role; the response never contains provider credentials, policy or guardrail configuration, or providers the caller cannot reach.
+      tags: [ Agent Network ]
+      security:
+        - BearerAuth: [ ]
+        - TokenAuth: [ ]
+      responses:
+        '200':
+          description: The caller-scoped Agent Network connection info
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/AgentNetworkMeSetup'
+        '401':
+          "$ref": "#/components/responses/requires_authentication"
+        '500':
+          "$ref": "#/components/responses/internal_error"
+  /api/agent-network/me/consumption:
+    get:
+      summary: List the caller's own Agent Network consumption
+      description: Returns the caller's own per-window token and cost counters (the user dimension recorded for the calling user), ordered window-newest-first. Available to every authenticated user regardless of role. Empty list when the caller has not consumed anything yet.
+      tags: [ Agent Network ]
+      security:
+        - BearerAuth: [ ]
+        - TokenAuth: [ ]
+      responses:
+        '200':
+          description: A JSON Array of the caller's own consumption counter rows
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/AgentNetworkConsumption'
+        '401':
+          "$ref": "#/components/responses/requires_authentication"
+        '500':
+          "$ref": "#/components/responses/internal_error"
   /api/agent-network/settings:
     get:
       summary: Retrieve Agent Network settings

shared/management/http/api/types.gen.go

@@ -2167,6 +2167,36 @@ type AgentNetworkGuardrailRequest struct {
 	Name string `json:"name"`
 }
 
+// AgentNetworkMeProvider One provider the caller may use, reduced to what a local tool needs for configuration.
+type AgentNetworkMeProvider struct {
+	// AllModelsAllowed True when no model allowlist restricts this provider for the caller; models then lists the declared or catalog models as a courtesy.
+	AllModelsAllowed bool `json:"all_models_allowed"`
+
+	// ApiFlavor Request-body shape the provider speaks ("anthropic", "openai"). Empty when the gateway dispatches it by URL path instead.
+	ApiFlavor string `json:"api_flavor"`
+
+	// CatalogId Catalog entry id naming the provider type.
+	CatalogId string `json:"catalog_id"`
+
+	// Models The effective model allowlist for the caller (or the declared/catalog models when all_models_allowed is true).
+	Models []string `json:"models"`
+
+	// Name Operator-assigned provider label.
+	Name string `json:"name"`
+}
+
+// AgentNetworkMeSetup The caller-scoped Agent Network connection info backing the "My Agent Network" self-service view. Available to every authenticated user; the answer is computed from the caller's own groups and carries display metadata only.
+type AgentNetworkMeSetup struct {
+	// Configured False when the account has no Agent Network set up or the caller's groups authorize none of it. The two cases are deliberately indistinguishable.
+	Configured bool `json:"configured"`
+
+	// Endpoint The account's Agent Network base URL, reachable over the NetBird tunnel only. Empty when configured is false.
+	Endpoint string `json:"endpoint"`
+
+	// Providers The providers at least one of the caller's policies authorizes, in creation order.
+	Providers []AgentNetworkMeProvider `json:"providers"`
+}
+
 // AgentNetworkPolicy defines model for AgentNetworkPolicy.
 type AgentNetworkPolicy struct {
 	// CreatedAt Timestamp when the policy was created.