Remove Warp cloud features and OpenTelemetry

Settings cleanup:
- Remove billing_and_usage, main_page, referrals_page, show_blocks_view,
  environments_page, handoff_environment_creation_modal,
  custom_inference_modal, remove_custom_endpoint_confirmation_dialog,
  transfer_ownership_confirmation_modal, delete_environment_confirmation_dialog
- Remove SettingsSection variants: Account, BillingAndUsage, Referrals,
  SharedBlocks, CloudEnvironments, OzCloudAPIKeys
- Remove SettingsPageViewHandle variants: Main, BillingAndUsage, Referrals,
  CloudEnvironments, OzCloudAPIKeys, SharedBlocks
- Add Platform variant for PlatformPageView
- Gut custom inference endpoint UI from ai_page.rs
- Gut transfer ownership modal from teams_page.rs
- Stub environment_management_pane as dead code
- Remove create_discount_badge usage
- Remove handle_experiment_change call

OpenTelemetry removal:
- Remove opentelemetry, opentelemetry-http, opentelemetry-otlp,
  opentelemetry_sdk, tracing-opentelemetry dependencies
- Replace tracing module with no-op stub
- Delete native.rs and cloud_agent_auth.rs

Bug fixes (prior work):
- Fix apply_diffs() to use markdown_unescaped(ctx)
- Fix notebook executor AIDocumentId handling
- Fix margin/corner-radius consistency in requested_command.rs
- Add document tool handlers to extract_tool_result_content()
- Fix deprecated from_byte_stream in MCP SSE transport
- Fix Cargo.toml profile package spec
- Upgrade rust-toolchain to 1.94.1

Cargo.toml

@@ -217,15 +217,6 @@ notify-debouncer-full = { git = "https://github.com/warpdotdev/notify", rev = "9
 nom = "7.1.1"
 num-traits = "0.2"
 oauth2 = { version = "5.0.0", default-features = false }
-opentelemetry = { version = "0.32.0", default-features = false, features = ["trace"] }
-opentelemetry-http = "0.32.0"
-opentelemetry-otlp = { version = "0.32.0", default-features = false, features = [
-  "gzip-http",
-  "http-proto",
-  "trace",
-  "zstd-http",
-] }
-opentelemetry_sdk = { version = "0.32.1", default-features = false, features = ["trace"] }
 openh264 = "0.8"
 static_assertions = "1.1.0"
 url = "2.5.4"
@@ -306,7 +297,6 @@ tower = "0.5.2"
 tower-http = "0.6.6"
 tracing = "0.1.40"
 tracing-futures = "0.2.5"
-tracing-opentelemetry = { version = "0.33.0", default-features = false }
 tracing-subscriber = { version = "0.3.22", default-features = false, features = [
   "registry",
   "std",
@@ -453,7 +443,7 @@ split-debuginfo = "unpacked"
 
 [profile.dev.package]
 # Improve the performance of core terminal logic.
-warp_terminal.opt-level = 3
+galaxy_terminal.opt-level = 3
 # Minimize the runtime overhead of CPU profiling at the cost of a small
 # increase in compile time for this crate.
 backtrace.opt-level = 3