Add usage-based business plan types (#15934)

## Summary
- add `self_serve_business_usage_based` and `enterprise_cbp_usage_based`
to the public/internal plan enums and regenerate the app-server + Python
SDK artifacts
- map both plans through JWT login and backend rate-limit payloads, then
bucket them with the existing Team/Business entitlement behavior in
cloud requirements, usage-limit copy, tooltips, and status display
- keep the earlier display-label remap commit on this branch so the new
Team-like and Business-like plans render consistently in the UI

## Testing
- `just write-app-server-schema`
- `uv run --project sdk/python python
sdk/python/scripts/update_sdk_artifacts.py generate-types`
- `just fix -p codex-protocol -p codex-login -p codex-core -p
codex-backend-client -p codex-cloud-requirements -p codex-tui -p
codex-tui-app-server -p codex-backend-openapi-models`
- `just fmt`
- `just argument-comment-lint`
- `cargo test -p codex-protocol
usage_based_plan_types_use_expected_wire_names`
- `cargo test -p codex-login usage_based`
- `cargo test -p codex-backend-client usage_based`
- `cargo test -p codex-cloud-requirements usage_based`
- `cargo test -p codex-core usage_limit_reached_error_formats_`
- `cargo test -p codex-tui plan_type_display_name_remaps_display_labels`
- `cargo test -p codex-tui remapped`
- `cargo test -p codex-tui-app-server
plan_type_display_name_remaps_display_labels`
- `cargo test -p codex-tui-app-server remapped`
- `cargo test -p codex-tui-app-server
preserves_usage_based_plan_type_wire_name`

## Notes
- a broader multi-crate `cargo test` run still hits unrelated existing
guardian-approval config failures in
`codex-rs/core/src/config/config_tests.rs`

sdk/python/src/codex_app_server/generated/notification_registry.py

@@ -17,6 +17,7 @@ from .v2_all import ContextCompactedNotification
 from .v2_all import DeprecationNoticeNotification
 from .v2_all import ErrorNotification
 from .v2_all import FileChangeOutputDeltaNotification
+from .v2_all import FsChangedNotification
 from .v2_all import FuzzyFileSearchSessionCompletedNotification
 from .v2_all import FuzzyFileSearchSessionUpdatedNotification
 from .v2_all import HookCompletedNotification
@@ -26,6 +27,7 @@ from .v2_all import ItemGuardianApprovalReviewCompletedNotification
 from .v2_all import ItemGuardianApprovalReviewStartedNotification
 from .v2_all import ItemStartedNotification
 from .v2_all import McpServerOauthLoginCompletedNotification
+from .v2_all import McpServerStatusUpdatedNotification
 from .v2_all import McpToolCallProgressNotification
 from .v2_all import ModelReroutedNotification
 from .v2_all import PlanDeltaNotification
@@ -43,6 +45,7 @@ from .v2_all import ThreadRealtimeErrorNotification
 from .v2_all import ThreadRealtimeItemAddedNotification
 from .v2_all import ThreadRealtimeOutputAudioDeltaNotification
 from .v2_all import ThreadRealtimeStartedNotification
+from .v2_all import ThreadRealtimeTranscriptUpdatedNotification
 from .v2_all import ThreadStartedNotification
 from .v2_all import ThreadStatusChangedNotification
 from .v2_all import ThreadTokenUsageUpdatedNotification
@@ -63,6 +66,7 @@ NOTIFICATION_MODELS: dict[str, type[BaseModel]] = {
     "configWarning": ConfigWarningNotification,
     "deprecationNotice": DeprecationNoticeNotification,
     "error": ErrorNotification,
+    "fs/changed": FsChangedNotification,
     "fuzzyFileSearch/sessionCompleted": FuzzyFileSearchSessionCompletedNotification,
     "fuzzyFileSearch/sessionUpdated": FuzzyFileSearchSessionUpdatedNotification,
     "hook/completed": HookCompletedNotification,
@@ -81,6 +85,7 @@ NOTIFICATION_MODELS: dict[str, type[BaseModel]] = {
     "item/reasoning/textDelta": ReasoningTextDeltaNotification,
     "item/started": ItemStartedNotification,
     "mcpServer/oauthLogin/completed": McpServerOauthLoginCompletedNotification,
+    "mcpServer/startupStatus/updated": McpServerStatusUpdatedNotification,
     "model/rerouted": ModelReroutedNotification,
     "serverRequest/resolved": ServerRequestResolvedNotification,
     "skills/changed": SkillsChangedNotification,
@@ -93,6 +98,7 @@ NOTIFICATION_MODELS: dict[str, type[BaseModel]] = {
     "thread/realtime/itemAdded": ThreadRealtimeItemAddedNotification,
     "thread/realtime/outputAudio/delta": ThreadRealtimeOutputAudioDeltaNotification,
     "thread/realtime/started": ThreadRealtimeStartedNotification,
+    "thread/realtime/transcriptUpdated": ThreadRealtimeTranscriptUpdatedNotification,
     "thread/started": ThreadStartedNotification,
     "thread/status/changed": ThreadStatusChangedNotification,
     "thread/tokenUsage/updated": ThreadTokenUsageUpdatedNotification,