fix: remove unnecessary re-exports that break opencode plugin loading

- Remove non-Plugin re-exports (CONFIG, graphitiClient, etc.) from
  index.ts that caused opencode to crash with 'fn3 is not a function'
  when it tried to call non-function exports as Plugin initializers
- Fix MCP client similarity scores to return null instead of fake values
- Fix o1/o3 model regex pattern to avoid false matches with gpt-4o
- Fix dedup substring check: require min 50 chars to avoid false matches

Author: happycastle114

src/index.ts

@@ -290,9 +290,11 @@ export const GraphitiPlugin: Plugin = async (ctx: PluginInput) => {
                       // For scored results, use similarity threshold
                       if (r.similarity != null && r.similarity > 0.9) return true;
                       // For unscored results, check content similarity via string matching
+                      // Only apply for content with reasonable length (>50 chars) to avoid false matches
                       if (r.similarity == null && r.memory) {
                         const existingNorm = r.memory.toLowerCase().trim();
                         const newNorm = sanitizedContent.toLowerCase().trim();
+                        if (newNorm.length < 50) return existingNorm === newNorm;
                         return existingNorm === newNorm || existingNorm.includes(newNorm) || newNorm.includes(existingNorm);
                       }
                       return false;
@@ -579,16 +581,6 @@ export const GraphitiPlugin: Plugin = async (ctx: PluginInput) => {
 
 export const SupermemoryPlugin = GraphitiPlugin;
 
-export { graphitiClient as graphitiMcpClient, GraphitiClient } from "./services/graphiti-client.js";
-export { graphitiRestClient, GraphitiRestClient } from "./services/graphiti-rest-client.js";
-
-const activeClient = USE_REST_API ? restClient : mcpClient;
-export { activeClient as graphitiClient };
-
-export type { MemoryScope, MemoryType, GraphitiNodeResult, GraphitiFactResult, GraphitiEpisodeResult, MemoryResult, UserProfile } from "./types/index.js";
-
-export { isConfigured, CONFIG, GRAPHITI_MCP_URL, GRAPHITI_REST_URL, USE_REST_API } from "./config.js";
-
 function formatSearchResults(
   query: string,
   scope: string | undefined,

src/services/compaction.ts

@@ -34,7 +34,7 @@ const SUPPORTED_MODEL_PATTERNS = [
   /gemini/i,
   /gpt-4o?/i,
   /gpt-5/i,
-  /\bo[13]\b/i,
+  /(?:^|[-/])o[13](?:$|[-/])/i,
   /deepseek/i,
   /qwen/i,
 ];

src/services/graphiti-client.ts

@@ -431,15 +431,15 @@ export class GraphitiClient {
         ...(nodesResult.nodes || []).map((node) => ({
           id: node.uuid,
           memory: node.summary || node.name,
-          similarity: 0.9 as number | null,
+          similarity: null as number | null,
           type: "node" as const,
           labels: node.labels,
           createdAt: node.created_at,
         })),
         ...validFacts.map((fact) => ({
           id: fact.uuid || `fact-${Date.now()}`,
           memory: this.formatFactWithRelationship(fact),
-          similarity: 0.85 as number | null,
+          similarity: null as number | null,
           type: "fact" as const,
           createdAt: fact.created_at,
           validAt: fact.valid_at,