prune old sites

backend/src/main/java/com/krrishg/controller/LLMController.java

@@ -162,4 +162,17 @@ public class LLMController {
             return ResponseEntity.notFound().build();
         }
     }
+
+    @PostMapping("/versions/{siteId}/prune")
+    public ResponseEntity<?> pruneVersions(
+            @AuthenticationPrincipal UserPrincipal principal,
+            @PathVariable UUID siteId,
+            @RequestBody(required = false) Map<String, Object> request) {
+        int keep = 10;
+        if (request != null && request.containsKey("keep")) {
+            keep = ((Number) request.get("keep")).intValue();
+        }
+        int deleted = llmService.pruneVersions(siteId, keep);
+        return ResponseEntity.ok(Map.of("deleted", deleted));
+    }
 }

backend/src/main/java/com/krrishg/dto/SiteStructure.java

@@ -35,5 +35,6 @@ public class SiteStructure {
         private String seoDescription;
         private int orderIndex;
         private String rawHtml;
+        private boolean deleted;
     }
 }

backend/src/main/java/com/krrishg/service/LLMResponseParser.java

@@ -31,7 +31,17 @@ public class LLMResponseParser {
         String json = extractJson(llmOutput);
         try {
             JsonNode root = objectMapper.readTree(json);
-            return parseSiteStructure(root);
+            return parseSiteStructure(root, true);
+        } catch (JsonProcessingException e) {
+            throw new IllegalArgumentException("Failed to parse LLM output as JSON: " + e.getMessage());
+        }
+    }
+
+    public SiteStructure parseLenient(String llmOutput) {
+        String json = extractJson(llmOutput);
+        try {
+            JsonNode root = objectMapper.readTree(json);
+            return parseSiteStructure(root, false);
         } catch (JsonProcessingException e) {
             throw new IllegalArgumentException("Failed to parse LLM output as JSON: " + e.getMessage());
         }
@@ -69,7 +79,7 @@ public class LLMResponseParser {
         return trimmed;
     }
 
-    private SiteStructure parseSiteStructure(JsonNode root) {
+    private SiteStructure parseSiteStructure(JsonNode root, boolean requirePages) {
         SiteStructure.SiteStructureBuilder builder = SiteStructure.builder();
 
         if (root.has("theme")) {
@@ -79,13 +89,13 @@ public class LLMResponseParser {
         List<SiteStructure.PageStructure> pages = new ArrayList<>();
         if (root.has("pages") && root.get("pages").isArray()) {
             for (JsonNode pageNode : root.get("pages")) {
-                pages.add(parsePage(pageNode));
+                pages.add(parsePage(pageNode, !requirePages));
             }
         }
         builder.pages(pages);
 
         SiteStructure structure = builder.build();
-        if (structure.getPages() == null || structure.getPages().isEmpty()) {
+        if (requirePages && (structure.getPages() == null || structure.getPages().isEmpty())) {
             throw new IllegalArgumentException("LLM output must contain at least one page");
         }
 
@@ -118,7 +128,7 @@ public class LLMResponseParser {
         return map;
     }
 
-    private SiteStructure.PageStructure parsePage(JsonNode pageNode) {
+    private SiteStructure.PageStructure parsePage(JsonNode pageNode, boolean lenient) {
         SiteStructure.PageStructure.PageStructureBuilder builder = SiteStructure.PageStructure.builder();
 
         if (pageNode.has("id")) {
@@ -145,9 +155,12 @@ public class LLMResponseParser {
         if (pageNode.has("rawHtml")) {
             builder.rawHtml(pageNode.get("rawHtml").asText());
         }
+        if (pageNode.has("deleted")) {
+            builder.deleted(pageNode.get("deleted").asBoolean());
+        }
 
         SiteStructure.PageStructure page = builder.build();
-        if (page.getTitle() == null || page.getSlug() == null) {
+        if (!lenient && !page.isDeleted() && (page.getTitle() == null || page.getSlug() == null)) {
             throw new IllegalArgumentException("Page must have title and slug");
         }
 

backend/src/main/java/com/krrishg/service/LLMService.java

@@ -29,8 +29,12 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.UUID;
 import java.util.stream.Collectors;
 
@@ -38,7 +42,6 @@ import java.util.stream.Collectors;
 public class LLMService {
 
     private static final Logger log = LoggerFactory.getLogger(LLMService.class);
-    private static final int MAX_VERSIONS_PER_SITE = 100;
 
     private final ProviderFactory providerFactory;
     private final LLMResponseParser responseParser;
@@ -48,6 +51,8 @@ public class LLMService {
     private final EncryptionService encryptionService;
     private final String systemPrompt;
     private final String refinerPrompt;
+    private final int maxVersionsPerSite;
+    private final double refineTemperature;
 
     public LLMService(ProviderFactory providerFactory,
                       LLMResponseParser responseParser,
@@ -57,7 +62,9 @@ public class LLMService {
                       EncryptionService encryptionService,
                       ResourceLoader resourceLoader,
                       @Value("${indie.llm.system-prompt-path:classpath:prompts/site-generator.txt}") String promptPath,
-                      @Value("${indie.llm.refiner-prompt-path:classpath:prompts/site-refiner.txt}") String refinerPath) {
+                      @Value("${indie.llm.refiner-prompt-path:classpath:prompts/site-refiner.txt}") String refinerPath,
+                      @Value("${indie.llm.max-versions-per-site:10}") int maxVersionsPerSite,
+                      @Value("${indie.llm.refine.temperature:0.3}") double refineTemperature) {
         this.providerFactory = providerFactory;
         this.responseParser = responseParser;
         this.referenceService = referenceService;
@@ -66,6 +73,8 @@ public class LLMService {
         this.encryptionService = encryptionService;
         this.systemPrompt = loadSystemPrompt(resourceLoader, promptPath);
         this.refinerPrompt = loadSystemPrompt(resourceLoader, refinerPath);
+        this.maxVersionsPerSite = maxVersionsPerSite;
+        this.refineTemperature = refineTemperature;
     }
 
     public SiteStructure generateSite(UUID userId, UUID siteId, String prompt,
@@ -121,29 +130,54 @@ public class LLMService {
         String combinedPrompt = "Current site structure:\n" + currentJson
                 + "\n\nRefinement request: " + refinementPrompt
                 + referenceContext
-                + "\n\nOutput the complete updated JSON structure with the requested changes applied.";
+                + "\n\nOutput only the fields that changed. Fields you omit will remain unchanged."
+                + " Include the \"id\" field for any page you modify or add."
+                + " To delete a page, include it with \"id\" and \"deleted\": true."
+                + " Pages not included in your output will stay as-is.";
 
         LLMOptions options = LLMOptions.builder()
-                .temperature(0.5)
+                .temperature(refineTemperature)
                 .build();
         LLMResult result = callLLM(provider, resolvedKey, resolvedBaseUrl, resolvedModel, refinerPrompt, combinedPrompt, references, options);
         log.info("LLM refinement completed: model={}, latency={}ms, tokens={}+{}",
                 result.getModel(), result.getLatencyMs(),
                 result.getPromptTokens(), result.getCompletionTokens());
 
-        SiteStructure structure = responseParser.parse(result.getContent());
+        SiteStructure patch = responseParser.parseLenient(result.getContent());
-        saveVersion(userId, siteId, refinementPrompt, references, result.getContent());
+        SiteStructure merged = mergePatches(currentStructure, patch);
+        saveVersion(userId, siteId, refinementPrompt, references, serializeStructure(merged));
 
-        return structure;
+        return merged;
     }
 
     public List<GenerationVersion> getVersions(UUID siteId) {
         Query query = new Query(Criteria.where("siteId").is(siteId))
                 .with(Sort.by(Sort.Direction.DESC, "versionNumber"))
-                .limit(MAX_VERSIONS_PER_SITE);
+                .limit(maxVersionsPerSite);
         return mongoTemplate.find(query, GenerationVersion.class);
     }
 
+    public int pruneVersions(UUID siteId) {
+        return pruneVersions(siteId, maxVersionsPerSite);
+    }
+
+    public int pruneVersions(UUID siteId, int keep) {
+        Query countQuery = new Query(Criteria.where("siteId").is(siteId));
+        long total = mongoTemplate.count(countQuery, GenerationVersion.class);
+        if (total <= keep) {
+            return 0;
+        }
+        long toDelete = total - keep;
+        Query findQuery = new Query(Criteria.where("siteId").is(siteId))
+                .with(Sort.by(Sort.Direction.ASC, "versionNumber"))
+                .limit((int) toDelete);
+        List<GenerationVersion> oldVersions = mongoTemplate.find(findQuery, GenerationVersion.class);
+        for (GenerationVersion v : oldVersions) {
+            mongoTemplate.remove(v);
+        }
+        return oldVersions.size();
+    }
+
     public SiteStructure restoreVersion(String versionId) {
         GenerationVersion version = mongoTemplate.findById(versionId, GenerationVersion.class);
         if (version == null) {
@@ -160,6 +194,110 @@ public class LLMService {
         mongoTemplate.remove(version);
     }
 
+    private SiteStructure mergePatches(SiteStructure current, SiteStructure patch) {
+        SiteStructure.SiteStructureBuilder builder = SiteStructure.builder();
+
+        if (patch.getTheme() != null) {
+            builder.theme(mergeTheme(current.getTheme(), patch.getTheme()));
+        } else {
+            builder.theme(current.getTheme());
+        }
+
+        if (patch.getPages() != null && !patch.getPages().isEmpty()) {
+            Map<String, SiteStructure.PageStructure> currentPageMap = new HashMap<>();
+            for (SiteStructure.PageStructure page : current.getPages()) {
+                if (page.getId() != null) {
+                    currentPageMap.put(page.getId(), page);
+                }
+            }
+
+            Set<String> deletedIds = new HashSet<>();
+            for (SiteStructure.PageStructure patchPage : patch.getPages()) {
+                if (patchPage.isDeleted() && patchPage.getId() != null) {
+                    deletedIds.add(patchPage.getId());
+                }
+            }
+
+            List<SiteStructure.PageStructure> mergedPages = new ArrayList<>();
+            for (SiteStructure.PageStructure currentPage : current.getPages()) {
+                if (currentPage.getId() != null && deletedIds.contains(currentPage.getId())) {
+                    continue;
+                }
+                SiteStructure.PageStructure matchingPatch = null;
+                if (currentPage.getId() != null) {
+                    for (SiteStructure.PageStructure pp : patch.getPages()) {
+                        if (currentPage.getId().equals(pp.getId())) {
+                            matchingPatch = pp;
+                            break;
+                        }
+                    }
+                }
+                if (matchingPatch != null && !matchingPatch.isDeleted()) {
+                    mergedPages.add(mergePage(currentPage, matchingPatch));
+                } else {
+                    mergedPages.add(currentPage);
+                }
+            }
+            for (SiteStructure.PageStructure patchPage : patch.getPages()) {
+                if (patchPage.isDeleted()) continue;
+                String pid = patchPage.getId();
+                if (pid == null || !currentPageMap.containsKey(pid)) {
+                    mergedPages.add(patchPage);
+                }
+            }
+            builder.pages(mergedPages);
+        } else {
+            builder.pages(current.getPages());
+        }
+
+        return builder.build();
+    }
+
+    private SiteStructure.ThemeConfig mergeTheme(SiteStructure.ThemeConfig current, SiteStructure.ThemeConfig patch) {
+        SiteStructure.ThemeConfig.ThemeConfigBuilder builder = SiteStructure.ThemeConfig.builder();
+
+        if (patch.getColors() != null) {
+            Map<String, String> mergedColors = new HashMap<>(current.getColors() != null ? current.getColors() : Map.of());
+            mergedColors.putAll(patch.getColors());
+            builder.colors(mergedColors);
+        } else {
+            builder.colors(current.getColors());
+        }
+
+        if (patch.getFonts() != null) {
+            Map<String, String> mergedFonts = new HashMap<>(current.getFonts() != null ? current.getFonts() : Map.of());
+            mergedFonts.putAll(patch.getFonts());
+            builder.fonts(mergedFonts);
+        } else {
+            builder.fonts(current.getFonts());
+        }
+
+        if (patch.getSpacing() != null) {
+            Map<String, String> mergedSpacing = new HashMap<>(current.getSpacing() != null ? current.getSpacing() : Map.of());
+            mergedSpacing.putAll(patch.getSpacing());
+            builder.spacing(mergedSpacing);
+        } else {
+            builder.spacing(current.getSpacing());
+        }
+
+        return builder.build();
+    }
+
+    private SiteStructure.PageStructure mergePage(SiteStructure.PageStructure current, SiteStructure.PageStructure patch) {
+        SiteStructure.PageStructure.PageStructureBuilder builder = SiteStructure.PageStructure.builder();
+
+        builder.id(patch.getId() != null ? patch.getId() : current.getId());
+        builder.title(patch.getTitle() != null ? patch.getTitle() : current.getTitle());
+        builder.slug(patch.getSlug() != null ? patch.getSlug() : current.getSlug());
+        builder.seoTitle(patch.getSeoTitle() != null ? patch.getSeoTitle() : current.getSeoTitle());
+        builder.seoDescription(patch.getSeoDescription() != null ? patch.getSeoDescription() : current.getSeoDescription());
+        builder.orderIndex(patch.getOrderIndex() != 0 ? patch.getOrderIndex() : current.getOrderIndex());
+        builder.rawHtml(patch.getRawHtml() != null ? patch.getRawHtml() : current.getRawHtml());
+        builder.deleted(patch.isDeleted());
+
+        return builder.build();
+    }
+
     private String resolveApiKey(UUID userId, String provider, String apiKey) {
         if (apiKey != null && !apiKey.isBlank()) {
             return apiKey;
@@ -247,6 +385,7 @@ public class LLMService {
                 .createdAt(LocalDateTime.now())
                 .build();
         mongoTemplate.save(version);
+        pruneVersions(siteId);
     }
 
     private int getNextVersionNumber(UUID siteId) {

backend/src/main/resources/application.yml

@@ -73,6 +73,10 @@ indie:
 
   llm:
     read-timeout: ${INDIE_LLM_READ_TIMEOUT:180s}
+    max-versions-per-site: ${INDIE_LLM_MAX_VERSIONS:10}
+    refine:
+      temperature: ${INDIE_LLM_REFINE_TEMPERATURE:0.3}
+      read-timeout: ${INDIE_LLM_REFINE_READ_TIMEOUT:300s}
     rate-limit:
       max-requests-per-hour: ${INDIE_LLM_RATE_LIMIT:10}
     providers:

backend/src/test/java/com/krrishg/service/LLMServiceTest.java

@@ -82,7 +82,8 @@ class LLMServiceTest {
         llmService = new LLMService(providerFactory, responseParser, referenceService,
                 mongoTemplate, userRepository, encryptionService,
                 resourceLoader, "classpath:prompts/site-generator.txt",
-                "classpath:prompts/site-refiner.txt");
+                "classpath:prompts/site-refiner.txt",
+                10, 0.3);
     }
 
     @Test
@@ -210,9 +211,11 @@ class LLMServiceTest {
 
     @Test
     void refineSiteReturnsRefinedStructure() {
+        String pageId = UUID.randomUUID().toString();
         SiteStructure current = SiteStructure.builder()
                 .pages(List.of(
                         SiteStructure.PageStructure.builder()
+                                .id(pageId)
                                 .title("Old")
                                 .slug("old")
                                 .rawHtml("<p>Old content</p>")
@@ -223,16 +226,202 @@ class LLMServiceTest {
         geminiProvider.withContent("""
                 {
                     "pages": [
-                        {"title": "Refined", "slug": "refined", "rawHtml": "<p>Hero</p>"}
+                        {"id": "__PAGE_ID__", "title": "Refined", "slug": "refined", "rawHtml": "<p>Updated</p>"}
                     ]
                 }
-                """);
+                """.replace("__PAGE_ID__", pageId));
 
         when(mongoTemplate.findOne(any(Query.class), eq(GenerationVersion.class))).thenReturn(null);
 
         SiteStructure result = llmService.refineSite(userId, siteId, current, "Make it better", null, "gemini", null);
 
         assertEquals("Refined", result.getPages().get(0).getTitle());
+        assertEquals("<p>Updated</p>", result.getPages().get(0).getRawHtml());
+        verify(mongoTemplate).save(any(GenerationVersion.class));
+    }
+
+    @Test
+    void refineSitePreservesUnchangedPages() {
+        String pageId1 = UUID.randomUUID().toString();
+        String pageId2 = UUID.randomUUID().toString();
+        SiteStructure current = SiteStructure.builder()
+                .theme(SiteStructure.ThemeConfig.builder()
+                        .colors(Map.of("primary", "#000", "background", "#fff"))
+                        .build())
+                .pages(List.of(
+                        SiteStructure.PageStructure.builder()
+                                .id(pageId1)
+                                .title("Home")
+                                .slug("home")
+                                .rawHtml("<p>Home content</p>")
+                                .build(),
+                        SiteStructure.PageStructure.builder()
+                                .id(pageId2)
+                                .title("About")
+                                .slug("about")
+                                .rawHtml("<p>About content</p>")
+                                .build()
+                ))
+                .build();
+
+        geminiProvider.withContent("""
+                {
+                    "theme": {
+                        "colors": {
+                            "primary": "#1a1a2e",
+                            "accent": "#e94560"
+                        }
+                    },
+                    "pages": [
+                        {"id": "__PAGE_ID__", "rawHtml": "<p>Updated home</p>"}
+                    ]
+                }
+                """.replace("__PAGE_ID__", pageId1));
+
+        when(mongoTemplate.findOne(any(Query.class), eq(GenerationVersion.class))).thenReturn(null);
+
+        SiteStructure result = llmService.refineSite(userId, siteId, current, "Change primary color", null, "gemini", null);
+
+        assertEquals("#1a1a2e", result.getTheme().getColors().get("primary"));
+        assertEquals("#fff", result.getTheme().getColors().get("background"));
+        assertNotNull(result.getTheme().getColors().get("accent"));
+
+        assertEquals(2, result.getPages().size());
+        assertEquals("<p>Updated home</p>", result.getPages().get(0).getRawHtml());
+        assertEquals("About", result.getPages().get(1).getTitle());
+        assertEquals("<p>About content</p>", result.getPages().get(1).getRawHtml());
+        verify(mongoTemplate).save(any(GenerationVersion.class));
+    }
+
+    @Test
+    void refineSiteDeletesPage() {
+        String pageId1 = UUID.randomUUID().toString();
+        String pageId2 = UUID.randomUUID().toString();
+        SiteStructure current = SiteStructure.builder()
+                .pages(List.of(
+                        SiteStructure.PageStructure.builder()
+                                .id(pageId1)
+                                .title("Home")
+                                .slug("home")
+                                .rawHtml("<p>Home</p>")
+                                .build(),
+                        SiteStructure.PageStructure.builder()
+                                .id(pageId2)
+                                .title("About")
+                                .slug("about")
+                                .rawHtml("<p>About</p>")
+                                .build()
+                ))
+                .build();
+
+        geminiProvider.withContent("""
+                {
+                    "pages": [
+                        {"id": "__PAGE_ID__", "deleted": true}
+                    ]
+                }
+                """.replace("__PAGE_ID__", pageId1));
+
+        when(mongoTemplate.findOne(any(Query.class), eq(GenerationVersion.class))).thenReturn(null);
+
+        SiteStructure result = llmService.refineSite(userId, siteId, current, "Remove Home page", null, "gemini", null);
+
+        assertEquals(1, result.getPages().size());
+        assertEquals("About", result.getPages().get(0).getTitle());
+        verify(mongoTemplate).save(any(GenerationVersion.class));
+    }
+
+    @Test
+    void refineSiteAddsNewPage() {
+        String existingId = UUID.randomUUID().toString();
+        SiteStructure current = SiteStructure.builder()
+                .pages(List.of(
+                        SiteStructure.PageStructure.builder()
+                                .id(existingId)
+                                .title("Home")
+                                .slug("home")
+                                .rawHtml("<p>Home</p>")
+                                .build()
+                ))
+                .build();
+
+        geminiProvider.withContent("""
+                {
+                    "pages": [
+                        {"title": "Contact", "slug": "contact", "rawHtml": "<p>Contact form</p>"}
+                    ]
+                }
+                """);
+
+        when(mongoTemplate.findOne(any(Query.class), eq(GenerationVersion.class))).thenReturn(null);
+
+        SiteStructure result = llmService.refineSite(userId, siteId, current, "Add Contact page", null, "gemini", null);
+
+        assertEquals(2, result.getPages().size());
+        assertEquals("Contact", result.getPages().get(1).getTitle());
+        verify(mongoTemplate).save(any(GenerationVersion.class));
+    }
+
+    @Test
+    void pruneVersionsDeletesOldestVersions() {
+        lenient().when(mongoTemplate.count(any(Query.class), eq(GenerationVersion.class))).thenReturn(15L);
+        List<GenerationVersion> oldVersions = List.of(
+                GenerationVersion.builder().id("v1").siteId(siteId).versionNumber(1).build(),
+                GenerationVersion.builder().id("v2").siteId(siteId).versionNumber(2).build(),
+                GenerationVersion.builder().id("v3").siteId(siteId).versionNumber(3).build(),
+                GenerationVersion.builder().id("v4").siteId(siteId).versionNumber(4).build(),
+                GenerationVersion.builder().id("v5").siteId(siteId).versionNumber(5).build()
+        );
+        lenient().when(mongoTemplate.find(any(Query.class), eq(GenerationVersion.class))).thenReturn(oldVersions);
+
+        int deleted = llmService.pruneVersions(siteId, 10);
+
+        assertEquals(5, deleted);
+    }
+
+    @Test
+    void pruneVersionsDoesNothingWhenUnderLimit() {
+        lenient().when(mongoTemplate.count(any(Query.class), eq(GenerationVersion.class))).thenReturn(8L);
+
+        int deleted = llmService.pruneVersions(siteId, 10);
+
+        assertEquals(0, deleted);
+    }
+
+    @Test
+    void saveVersionTriggersAutoCleanup() {
+        String pageId = UUID.randomUUID().toString();
+        when(mongoTemplate.findOne(any(Query.class), eq(GenerationVersion.class))).thenReturn(null);
+        lenient().when(mongoTemplate.count(any(Query.class), eq(GenerationVersion.class))).thenReturn(15L);
+        lenient().when(mongoTemplate.find(any(Query.class), eq(GenerationVersion.class))).thenReturn(List.of(
+                GenerationVersion.builder().id("old").siteId(siteId).versionNumber(1).build(),
+                GenerationVersion.builder().id("older").siteId(siteId).versionNumber(2).build(),
+                GenerationVersion.builder().id("oldest").siteId(siteId).versionNumber(3).build(),
+                GenerationVersion.builder().id("ancient").siteId(siteId).versionNumber(4).build(),
+                GenerationVersion.builder().id("prehistoric").siteId(siteId).versionNumber(5).build()
+        ));
+
+        geminiProvider.withContent("""
+                {
+                    "pages": [
+                        {"id": "__PAGE_ID__", "title": "Home", "slug": "home", "rawHtml": "<p>Test</p>"}
+                    ]
+                }
+                """.replace("__PAGE_ID__", pageId));
+
+        SiteStructure current = SiteStructure.builder()
+                .pages(List.of(
+                        SiteStructure.PageStructure.builder()
+                                .id(pageId)
+                                .title("Home")
+                                .slug("home")
+                                .rawHtml("<p>Old</p>")
+                                .build()
+                ))
+                .build();
+
+        llmService.refineSite(userId, siteId, current, "Update", null, "gemini", null);
+
         verify(mongoTemplate).save(any(GenerationVersion.class));
     }
 

frontend/src/app/core/services/llm-api.service.ts

@@ -26,4 +26,8 @@ export class LlmApiService {
   deleteVersion(versionId: string): Observable<void> {
     return this.http.delete<void>(`/api/llm/versions/${versionId}`);
   }
+
+  pruneVersions(siteId: string, keep: number = 10): Observable<{deleted: number}> {
+    return this.http.post<{deleted: number}>(`/api/llm/versions/${siteId}/prune`, { keep });
+  }
 }

frontend/src/app/llm-workspace/llm-workspace.component.ts

@@ -91,10 +91,48 @@ import { DeleteVersionDialog } from './delete-version-dialog/delete-version-dial
                     Generate
                   </button>
                 </div>
-                <div *ngIf="configuredProviders.length === 0 && !(session.generating$ | async)" class="mt-3 p-3 bg-yellow-50 border border-yellow-200 rounded-lg">
+
-                  <p class="text-sm text-yellow-800">
+              </div>
-                    No API keys configured. Go to <a class="underline font-medium cursor-pointer" (click)="goToSettings()">Settings</a> to add an API key for an AI provider.
+            </mat-card-content>
-                  </p>
+          </mat-card>
+
+          <mat-card *ngIf="configuredProviders.length === 0 && !(session.generating$ | async)" class="p-4" appearance="outlined">
+            <mat-card-content class="!p-0">
+              <h4 class="text-sm font-semibold text-gray-500 uppercase tracking-wide mb-4">Configure AI Provider</h4>
+              <p class="text-sm text-gray-600 mb-3">
+                Add an API key to enable AI site generation. Keys are encrypted at rest.
+              </p>
+              <div class="space-y-3">
+                <mat-form-field appearance="outline" class="w-full">
+                  <mat-label>Provider</mat-label>
+                  <mat-select [(ngModel)]="setupProvider">
+                    <mat-option value="gemini">Gemini</mat-option>
+                    <mat-option value="openai">OpenAI / Compatible</mat-option>
+                  </mat-select>
+                </mat-form-field>
+                <mat-form-field appearance="outline" class="w-full">
+                  <mat-label>API Key</mat-label>
+                  <input matInput [type]="setupKeyVisible ? 'text' : 'password'" [(ngModel)]="setupApiKey" />
+                  <button mat-icon-button matSuffix (click)="setupKeyVisible = !setupKeyVisible" type="button"
+                    [attr.aria-label]="setupKeyVisible ? 'Hide key' : 'Show key'">
+                    <mat-icon>{{ setupKeyVisible ? 'visibility_off' : 'visibility' }}</mat-icon>
+                  </button>
+                </mat-form-field>
+                <mat-form-field appearance="outline" class="w-full" *ngIf="setupProvider === 'openai'">
+                  <mat-label>Base URL (optional)</mat-label>
+                  <input matInput placeholder="https://api.deepseek.com/v1" [(ngModel)]="setupBaseUrl" />
+                  <mat-hint>For OpenAI-compatible providers like DeepSeek</mat-hint>
+                </mat-form-field>
+                <mat-form-field appearance="outline" class="w-full">
+                  <mat-label>Model (optional)</mat-label>
+                  <input matInput placeholder="{{ setupProvider === 'gemini' ? 'gemini-2.0-flash-exp' : 'gpt-4o-mini' }}" [(ngModel)]="setupModel" />
+                  <mat-hint>Override the default model name</mat-hint>
+                </mat-form-field>
+                <div class="flex justify-end">
+                  <button mat-flat-button color="primary" [disabled]="!setupApiKey.trim() || setupSaving" (click)="saveSetupKey()">
+                    <mat-icon>save</mat-icon>
+                    {{ setupSaving ? 'Saving...' : 'Save' }}
+                  </button>
                 </div>
               </div>
             </mat-card-content>
@@ -123,7 +161,19 @@ import { DeleteVersionDialog } from './delete-version-dialog/delete-version-dial
                 <mat-card-content class="!p-0">
                   <div class="flex items-center justify-between mb-3">
                     <h4 class="text-sm font-semibold text-gray-500 uppercase tracking-wide">History</h4>
-                    <span class="text-xs text-gray-400">{{ (session.versions$ | async)?.length || 0 }} version{{ ((session.versions$ | async)?.length || 0) !== 1 ? 's' : '' }}</span>
+                    <div class="flex items-center gap-2">
+                      <button
+                        *ngIf="((session.versions$ | async)?.length || 0) > 10"
+                        mat-stroked-button
+                        class="!text-[10px] !leading-none !min-w-0 !px-2 !py-0.5 !h-auto"
+                        color="warn"
+                        (click)="pruneOldVersions()"
+                        title="Keep only the 10 most recent versions"
+                      >
+                        Clear old
+                      </button>
+                      <span class="text-xs text-gray-400">{{ (session.versions$ | async)?.length || 0 }} version{{ ((session.versions$ | async)?.length || 0) !== 1 ? 's' : '' }}</span>
+                    </div>
                   </div>
                   <div *ngIf="session.loadingVersions$ | async" class="flex justify-center py-4">
                     <mat-spinner diameter="20"></mat-spinner>
@@ -275,7 +325,7 @@ import { DeleteVersionDialog } from './delete-version-dialog/delete-version-dial
             </div>
           </div>
 
-          <div *ngIf="!(session.generating$ | async) && !(session.currentResult$ | async) && !(session.error$ | async)" class="flex flex-col items-center justify-center py-16 text-gray-400">
+          <div *ngIf="configuredProviders.length > 0 && !(session.generating$ | async) && !(session.currentResult$ | async) && !(session.error$ | async)" class="flex flex-col items-center justify-center py-16 text-gray-400">
             <mat-icon class="text-6xl mb-4" style="width: auto; height: auto; font-size: 4rem;">auto_awesome</mat-icon>
             <h3 class="text-xl font-medium text-gray-500 mb-2">Describe your dream site</h3>
             <p class="text-sm text-gray-400 text-center max-w-md">
@@ -306,6 +356,14 @@ export class LlmWorkspaceComponent implements OnInit, OnDestroy {
   llmModels: Record<string, string> = {};
   configuredProviders: string[] = [];
   selectedProvider = '';
+
+  setupProvider = 'gemini';
+  setupApiKey = '';
+  setupBaseUrl = '';
+  setupModel = '';
+  setupSaving = false;
+  setupKeyVisible = false;
+
   private destroy$ = new Subject<void>();
 
   ngOnInit(): void {
@@ -446,6 +504,23 @@ export class LlmWorkspaceComponent implements OnInit, OnDestroy {
     });
   }
 
+  pruneOldVersions(): void {
+    if (!this.siteId) return;
+    this.api.pruneVersions(this.siteId)
+      .pipe(takeUntil(this.destroy$))
+      .subscribe({
+        next: (result) => {
+          this.loadVersions();
+          if (result.deleted > 0) {
+            this.snackBar.open(`Cleaned up ${result.deleted} old versions`, 'Close', { duration: 3000 });
+          }
+        },
+        error: () => {
+          this.snackBar.open('Failed to clean up versions', 'Close', { duration: 3000 });
+        },
+      });
+  }
+
   switchToVersion(version: GenerationVersion): void {
     if (version.id === this.session.currentVersionId) return;
     this.session.setGenerating(true);
@@ -502,6 +577,30 @@ export class LlmWorkspaceComponent implements OnInit, OnDestroy {
     return prompt.length > maxLen ? prompt.slice(0, maxLen) + '...' : prompt;
   }
 
+  saveSetupKey(): void {
+    const key = this.setupApiKey?.trim();
+    const baseUrl = this.setupBaseUrl?.trim() || undefined;
+    const model = this.setupModel?.trim() || undefined;
+    if (!key) return;
+    this.setupSaving = true;
+    this.llmConfigService.saveKey(this.setupProvider, key, baseUrl, model)
+      .pipe(takeUntil(this.destroy$))
+      .subscribe({
+        next: () => {
+          this.setupSaving = false;
+          this.setupApiKey = '';
+          this.setupBaseUrl = '';
+          this.setupModel = '';
+          this.snackBar.open(`${this.setupProvider} API key saved`, 'Close', { duration: 2000 });
+          this.loadLlmConfig();
+        },
+        error: () => {
+          this.setupSaving = false;
+          this.snackBar.open('Failed to save API key', 'Close', { duration: 3000 });
+        },
+      });
+  }
+
   ngOnDestroy(): void {
     this.destroy$.next();
     this.destroy$.complete();