gui+catalog: remove codex-spark from vision sidecar + reduce context to 100k

- Dashboard: remove gpt-5.3-codex-spark from SIDECAR_MODELS list
- catalog: gpt-5.3-codex-spark context window 128k → 100k
- test: updated context window expectation

Author: lidge-jun

gui/src/pages/Dashboard.tsx

@@ -49,7 +49,7 @@ interface UpdateJob {
   restarted?: boolean;
 }
 
-const SIDECAR_MODELS = ["gpt-5.4-mini", "gpt-5.4", "gpt-5.5", "gpt-5.3-codex-spark", "gpt-5.6-sol", "gpt-5.6-terra", "gpt-5.6-luna"];
+const SIDECAR_MODELS = ["gpt-5.4-mini", "gpt-5.4", "gpt-5.5", "gpt-5.6-sol", "gpt-5.6-terra", "gpt-5.6-luna"];
 const REASONING_LEVELS = ["low", "medium", "high"];
 
 function defaultUpdateChannel(version: string | undefined): UpdateChannel {

src/codex/catalog.ts

@@ -113,7 +113,7 @@ const NATIVE_GPT56_CONTEXT_WINDOW = 372_000;
 const NATIVE_OPENAI_CONTEXT_OVERRIDES: Record<string, { contextWindow?: number; maxContextWindow?: number }> = {
   "gpt-5.5": { contextWindow: 272_000, maxContextWindow: 272_000 },
   "gpt-5.4": { contextWindow: 1_000_000, maxContextWindow: 1_000_000 },
-  "gpt-5.3-codex-spark": { contextWindow: 128_000, maxContextWindow: 128_000 },
+  "gpt-5.3-codex-spark": { contextWindow: 100_000, maxContextWindow: 100_000 },
   "gpt-5.6-sol": { contextWindow: NATIVE_GPT56_CONTEXT_WINDOW, maxContextWindow: NATIVE_GPT56_CONTEXT_WINDOW },
   "gpt-5.6-terra": { contextWindow: NATIVE_GPT56_CONTEXT_WINDOW, maxContextWindow: NATIVE_GPT56_CONTEXT_WINDOW },
   "gpt-5.6-luna": { contextWindow: NATIVE_GPT56_CONTEXT_WINDOW, maxContextWindow: NATIVE_GPT56_CONTEXT_WINDOW },

tests/codex-catalog.test.ts

@@ -163,7 +163,7 @@ describe("Codex catalog routed normalization", () => {
     expect(native?.auto_compact_token_limit).toBe(900_000);
   });
 
-  test("native gpt-5.3-codex-spark uses its 128k context window instead of inherited codex max", () => {
+  test("native gpt-5.3-codex-spark uses its 100k context window instead of inherited codex max", () => {
     const template = {
       ...nativeTemplate(),
       context_window: 272_000,
@@ -172,9 +172,9 @@ describe("Codex catalog routed normalization", () => {
     const entries = buildCatalogEntries(template, ["gpt-5.3-codex-spark"], []);
     const native = entries.find(e => e.slug === "gpt-5.3-codex-spark");
 
-    expect(native?.context_window).toBe(128_000);
-    expect(native?.max_context_window).toBe(128_000);
-    expect(native?.auto_compact_token_limit).toBe(115_200);
+    expect(native?.context_window).toBe(100_000);
+    expect(native?.max_context_window).toBe(100_000);
+    expect(native?.auto_compact_token_limit).toBe(90_000);
   });
 
   test("native GPT-5.6 entries add max and ultra reasoning even when cloned from an older template", () => {