feat(thinking): 思考等级扩展五档（Max/XHigh）+ 按默认模型 support_efforts 能力感知；删除过时的 max→high 迁移；Segmented 支持逐选项禁用/tooltip — bump to v0.7.23

src/lib/thinking-efforts.ts

@@ -0,0 +1,127 @@
+/**
+ * Thinking-effort capability resolution.
+ *
+ * kimi-code's `[thinking] effort` is a free-form string (low/medium/high/
+ * max/xhigh in practice) that the CLI forwards verbatim to OpenAI-compatible
+ * upstreams as `reasoning_effort`. Which tiers a given model accepts is
+ * declared per model in config.toml (`[models."<alias>"] support_efforts`);
+ * models.dev only carries a boolean `reasoning` flag with no tier list. The
+ * two sources are merged here so the UI can grey out tiers the current default
+ * model would reject, without ever rejecting a stored value on read.
+ */
+
+import type { Model } from "../types";
+
+export const THINKING_EFFORTS = [
+  "low",
+  "medium",
+  "high",
+  "max",
+  "xhigh",
+] as const;
+
+export type ThinkingEffort = (typeof THINKING_EFFORTS)[number];
+
+/** Why a tier is blocked, or (for undeclared models) merely unverified. */
+export type EffortNote =
+  | { kind: "thinkingUnsupported" }
+  | { kind: "tierUnsupported"; supported: string[] }
+  | { kind: "tierUndeclared" };
+
+export interface EffortAvailability {
+  /** Whether the tier can be picked. */
+  enabled: boolean;
+  /** Advisory message — set for blocked tiers and for unverified ones. */
+  note?: EffortNote;
+}
+
+export interface ThinkingEffortSupport {
+  /** False only when the model is known not to support thinking at all. */
+  thinkingSupported: boolean;
+  /** Declared tiers, or null when nothing is known about the model. */
+  declared: string[] | null;
+  levels: Record<ThinkingEffort, EffortAvailability>;
+}
+
+/** Tiers offered unverified when a model declares nothing at all. */
+const ALWAYS_OFFERED = new Set<string>(["low", "medium", "high"]);
+
+/**
+ * Normalize a `support_efforts` value into a comparable list, or null when the
+ * key is absent / malformed (treating it as "unknown", not "none supported").
+ */
+export function normalizeSupportEfforts(value: unknown): string[] | null {
+  if (!Array.isArray(value)) return null;
+  const tiers = value
+    .filter((v): v is string => typeof v === "string")
+    .map((v) => v.trim())
+    .filter((v) => v.length > 0);
+  return tiers.length > 0 ? tiers : null;
+}
+
+/** Read `support_efforts` from a model entry's preserved config.toml fields. */
+export function readSupportEfforts(model: Model | undefined): string[] | null {
+  if (!model) return null;
+  const raw = model.raw_other;
+  if (!raw || typeof raw !== "object" || Array.isArray(raw)) return null;
+  return normalizeSupportEfforts(
+    (raw as Record<string, unknown>).support_efforts
+  );
+}
+
+function buildLevels(
+  resolve: (effort: ThinkingEffort) => EffortAvailability
+): Record<ThinkingEffort, EffortAvailability> {
+  const levels = {} as Record<ThinkingEffort, EffortAvailability>;
+  for (const effort of THINKING_EFFORTS) levels[effort] = resolve(effort);
+  return levels;
+}
+
+/**
+ * Resolve per-tier availability from the two capability sources, in priority
+ * order:
+ *  1. `supportEfforts` declared → tiers follow the list exactly.
+ *  2. models.dev `reasoning === false` → the whole thinking area is off.
+ *  3. Nothing known → low/medium/high are offered plain, max/xhigh stay
+ *     selectable but carry a "not declared" note (upstream may reject them).
+ */
+export function resolveThinkingEffortSupport(input: {
+  supportEfforts?: unknown;
+  reasoning?: boolean;
+}): ThinkingEffortSupport {
+  const declared = normalizeSupportEfforts(input.supportEfforts);
+  if (declared) {
+    const supported = new Set(declared.map((t) => t.toLowerCase()));
+    return {
+      thinkingSupported: true,
+      declared,
+      levels: buildLevels((effort) =>
+        supported.has(effort)
+          ? { enabled: true }
+          : {
+              enabled: false,
+              note: { kind: "tierUnsupported", supported: declared },
+            }
+      ),
+    };
+  }
+  if (input.reasoning === false) {
+    return {
+      thinkingSupported: false,
+      declared: null,
+      levels: buildLevels(() => ({
+        enabled: false,
+        note: { kind: "thinkingUnsupported" },
+      })),
+    };
+  }
+  return {
+    thinkingSupported: true,
+    declared: null,
+    levels: buildLevels((effort) =>
+      ALWAYS_OFFERED.has(effort)
+        ? { enabled: true }
+        : { enabled: true, note: { kind: "tierUndeclared" } }
+    ),
+  };
+}