fix(chat): Clear old conversations

chat/index.html

@@ -441,7 +441,7 @@
                     <summary>History</summary>
                     <div class="history-list">
                         <template x-if="historyItems.length === 0">
-                            <div style="opacity: 0.7">No conversations today</div>
+                            <div style="opacity: 0.7">No conversations in the last 24 hours</div>
                         </template>
                         <template x-for="(item, idx) in historyItems" :key="idx">
                             <div class="history-item" @click="restoreConversation(item.messages)">
@@ -526,7 +526,7 @@
                 pendingImages: [],
                 attachment: initialAttachment,
                 promptText: initialPromptText,
-                activeModelName: "gemini-3.8-flash",
+                activeModelName: "claude-haiku-5-5",
                 historyItems: [],
                 isBusy: false,
                 abortController: null,
@@ -537,7 +537,7 @@
                     { name: "gpt-6-luna", chat: chatWithOpenAI, key: window.env.OPENAI_API_KEY },
                     { name: "gemini-3.5-flash-lite", chat: chatWithGemini, key: window.env.GEMINI_API_KEY },
                     { name: "gemini-3.8-flash", chat: chatWithGemini, key: window.env.GEMINI_API_KEY },
-                    { name: "claude-haiku-4-5-20251001", chat: chatWithClaude, key: window.env.ANTHROPIC_API_KEY },
+                    { name: "claude-haiku-5-5", chat: chatWithClaude, key: window.env.ANTHROPIC_API_KEY },
                 ],
 
                 async init() {
@@ -640,7 +640,7 @@
                     } finally {
                         this.isBusy = false;
                         this.abortController = null;
-                        if (!this.attachment) updateSessionHistory(this.sessionId, this.messages);
+                        if (!this.attachment) this.historyItems = updateSessionHistory(this.sessionId, this.messages);
                     }
                 },
 
@@ -669,7 +669,7 @@
                     const idx = this.messages.indexOf(msg);
                     if (idx === -1) return;
                     this.messages = this.messages.slice(0, idx);
-                    if (!this.attachment) updateSessionHistory(this.sessionId, this.messages);
+                    if (!this.attachment) this.historyItems = updateSessionHistory(this.sessionId, this.messages);
                     this.promptText = msg.content;
                     this.pendingImages = msg.images ? JSON.parse(JSON.stringify(msg.images)) : [];
                     this.$nextTick(() => this.$refs.promptInput.focus());
@@ -977,29 +977,60 @@
             const STORAGE_KEY = "chat_conversations";
             const todayKey = () => new Date().toISOString().slice(0, 10);
 
+            const readHistory = () => {
+                const all = JSON.parse(localStorage.getItem(STORAGE_KEY) || "{}");
+                const cutoff = Date.now() - 24 * 60 * 60 * 1000;
+                let changed = false;
+                for (const day of Object.keys(all)) {
+                    const recent = all[day].filter((item) => Date.parse(item.time) >= cutoff);
+                    if (recent.length !== all[day].length) changed = true;
+                    if (recent.length) all[day] = recent;
+                    else {
+                        delete all[day];
+                        changed = true;
+                    }
+                }
+                if (changed) localStorage.setItem(STORAGE_KEY, JSON.stringify(all));
+                return all;
+            };
+
+            const historyItemsFrom = (all) => Object.values(all).flat().sort((a, b) => Date.parse(b.time) - Date.parse(a.time));
+
             const loadHistory = () => {
                 try {
-                    return JSON.parse(localStorage.getItem(STORAGE_KEY) || "{}")[todayKey()] || [];
+                    return historyItemsFrom(readHistory());
                 } catch {
                     return [];
                 }
             };
 
             const updateSessionHistory = (sessionId, messages) => {
-                const all = JSON.parse(localStorage.getItem(STORAGE_KEY) || "{}");
-                const today = todayKey();
-                all[today] ??= [];
+                const all = readHistory();
+                const day = Object.keys(all).find((day) => all[day].some((item) => item.sessionId === sessionId)) || todayKey();
+                all[day] ??= [];
 
-                const idx = all[today].findIndex((item) => item.sessionId === sessionId);
+                const idx = all[day].findIndex((item) => item.sessionId === sessionId);
                 if (idx >= 0) {
-                    all[today][idx] = { sessionId, time: all[today][idx].time, messages };
+                    all[day][idx] = { sessionId, time: all[day][idx].time, messages };
                 } else {
-                    all[today].unshift({ sessionId, time: new Date().toISOString(), messages });
+                    all[day].unshift({ sessionId, time: new Date().toISOString(), messages });
                 }
 
-                all[today] = all[today].slice(0, 5);
-                localStorage.setItem(STORAGE_KEY, JSON.stringify(all));
-                return all[today];
+                all[day] = all[day].slice(0, 5);
+                while (true) {
+                    try {
+                        localStorage.setItem(STORAGE_KEY, JSON.stringify(all));
+                        break;
+                    } catch (error) {
+                        if (error.name !== "QuotaExceededError") throw error;
+                        const oldestDay = Object.keys(all).sort().find((day) => all[day].some((item) => item.sessionId !== sessionId));
+                        if (!oldestDay) throw error;
+                        const idx = all[oldestDay].findLastIndex((item) => item.sessionId !== sessionId);
+                        all[oldestDay].splice(idx, 1);
+                        if (!all[oldestDay].length) delete all[oldestDay];
+                    }
+                }
+                return historyItemsFrom(all);
             };
 
             const clearAllHistory = () => {