Simplify provider routing and retire QMD

Author: MihirSahu

.env.example

@@ -18,7 +18,6 @@ OPENCODE_QUERY_PORT=8282
 OPENCODE_QUERY_TIMEOUT_MS=120000
 OPENCODE_PROMPT_HEARTBEAT_MS=15000
 OPENCODE_WORKER_SHUTDOWN_GRACE_MS=5000
-OPENCODE_MODEL=openai/gpt-5.5
 
 SYNC_WORKER_PORT=4000
 SYNC_INTERVAL_SECONDS=300
@@ -34,7 +33,5 @@ AWS_ACCESS_KEY_ID=
 AWS_SECRET_ACCESS_KEY=
 AWS_SESSION_TOKEN=
 OPENROUTER_API_KEY=
-# Optional: used only with docker-compose.subscription.yml.
-OPENCODE_OPENAI_AUTH_HOST_FILE=../../opencode-auth.json
 
 CLOUDFLARE_TUNNEL_TOKEN=

Makefile

@@ -2,9 +2,6 @@ SHELL := /bin/bash
 
 COMPOSE_FILE := infra/docker/docker-compose.yml
 COMPOSE_FLAGS := --env-file .env -f $(COMPOSE_FILE)
-ifeq ($(SUBSCRIPTION),1)
-COMPOSE_FLAGS += -f infra/docker/docker-compose.subscription.yml
-endif
 
 -include .env
 export

README.md

@@ -19,10 +19,10 @@ The scheduler triggers S3 sync at a fixed interval. OpenCode reads the mirror di
 ## Repository layout
 
 - `apps/web/`: Next.js UI, authenticated API routes, SQLite chat persistence
-- `services/opencode-query/`: grounded answers, model catalog API, folder listing
+- `services/opencode-query/`: grounded answers, folder listing
 - `services/sync-worker/`: read-only S3 sync, run status and logs
 - `services/scheduler/`: periodic sync trigger
-- `packages/model-catalog/`: shared model definitions and route defaults
+- `packages/model-catalog/`: fixed model and provider constants
 - `showcase-website/`: separate marketing website
 - `infra/`: Docker Compose, AWS IAM, Cloudflare and systemd configuration
 
@@ -54,27 +54,13 @@ sfw pnpm --filter lattice-web dev
 
 Backend containers expose ports only on the Docker network. Running only the web process on the host does not make those services reachable automatically.
 
-## Models and authentication
+## Model and authentication
 
-New chats default to GPT-5.5 through **OpenRouter API billing**. The existing catalog also includes Claude Sonnet 4.6, Claude Opus 4.6, and Gemini 2.5 Pro. `OPENCODE_MODEL` controls the backend default model; model definitions live in `packages/model-catalog/catalog.json`.
+All questions use **GPT-6 Luna (`openai/gpt-6-luna`) through OpenRouter**. Set `OPENROUTER_API_KEY`; there are no model or billing-route pickers. ChatGPT subscription authentication and `OPENCODE_MODEL` overrides are no longer supported.
 
-The OpenAI route toggle supports OpenRouter and ChatGPT subscription OAuth. There is no direct OpenAI API-key integration. Existing explicit subscription choices and legacy OpenAI chat choices remain preserved.
+Existing threads migrate to Luna/OpenRouter for future questions. Historical answers retain their original model and route metadata. Old OAuth files are no longer mounted or used by Lattice; existing files on disk are left untouched.
 
-### Optional subscription access
-
-API-only setup does not require an OAuth file. To also use subscription authentication:
-
-1. Copy the OpenCode `auth.json` from a machine where you are already logged in to repository-root `opencode-auth.json`.
-2. Set `OPENCODE_OPENAI_AUTH_HOST_FILE=../../opencode-auth.json` in `.env`.
-3. Start the optional mount overlay:
-
-```bash
-make up SUBSCRIPTION=1
-# Equivalent:
-docker compose --env-file .env -f infra/docker/docker-compose.yml -f infra/docker/docker-compose.subscription.yml up --build -d
-```
-
-Use `SUBSCRIPTION=1` for subsequent `make up` calls while retaining subscription access. The overlay bind-mounts the file at `/app/opencode-data/opencode/auth.json` and disables automatic host-path creation. OpenCode token refreshes persist to that file. Never commit or log it; Git and Docker build contexts exclude it.
+Luna uses Chat Completions with reasoning disabled so it can call OpenCode's file tools. Both the main and helper model are pinned to Luna in the worker configuration.
 
 ## Environment
 
@@ -85,9 +71,7 @@ Use `SUBSCRIPTION=1` for subsequent `make up` calls while retaining subscription
 | `CHAT_DB_PATH` | Chat SQLite database path inside the web container |
 | `WEB_AUTH_MODE` | `dev`, `cloudflare`, or `auto` |
 | `WEB_DEV_USER_EMAIL` | Development identity; optional fallback with `auto` |
-| `OPENROUTER_API_KEY` | API key for all OpenRouter-backed models |
-| `OPENCODE_MODEL` | Default model ID; invalid/unset values fall back to GPT-5.5 |
-| `OPENCODE_OPENAI_AUTH_HOST_FILE` | OAuth file used only by the subscription Compose overlay |
+| `OPENROUTER_API_KEY` | Required API key for GPT-6 Luna through OpenRouter |
 | `OPENCODE_QUERY_TIMEOUT_MS` | Inactivity timeout; default 120000, `0` disables it |
 | `OPENCODE_PROMPT_HEARTBEAT_MS` | Worker heartbeat interval; default 15000 |
 | `OPENCODE_WORKER_SHUTDOWN_GRACE_MS` | Grace period before process-group force-kill; default 5000 |
@@ -125,7 +109,7 @@ After upgrading from a version containing QMD, remove the orphaned service conta
 docker compose --env-file .env -f infra/docker/docker-compose.yml up --build -d --remove-orphans
 ```
 
-Include the subscription overlay when needed. This does not delete old bind-mounted index/cache directories.
+This does not delete old bind-mounted index/cache directories. Start with only the main Compose file to remove the old subscription authentication mount.
 
 ## Checks and troubleshooting
 
@@ -139,4 +123,4 @@ docker compose --env-file .env.example -f infra/docker/docker-compose.yml config
 
 CI runs type checks, unit/integration tests, production builds, and container builds. SQLite tests use disposable databases; OpenCode integration tests use isolated configuration and make no paid model calls. Actual provider answers still require a configured API key and a manual query checking streaming, citations, file tools, and cancellation.
 
-Use `make logs`, `make ps`, and `scripts/healthcheck.sh` for diagnostics. For provider failures, verify `OPENROUTER_API_KEY`, selected model availability, or the optional subscription mount. For sync failures, inspect AWS permissions and sync-worker logs.
+Use `make logs`, `make ps`, and `scripts/healthcheck.sh` for diagnostics. For provider failures, verify `OPENROUTER_API_KEY`, OpenRouter credits, and GPT-6 Luna availability. For sync failures, inspect AWS permissions and sync-worker logs.

apps/web/app/api/ask/route.ts

@@ -10,8 +10,6 @@ export async function POST(request: Request) {
       question: parsed.question,
       folder: parsed.folder,
       engine: parsed.engine ?? "opencode",
-      model: parsed.model,
-      openAiRoute: parsed.openAiRoute,
       limit: parsed.limit
     });
 

apps/web/app/api/chat/ask/route.ts

@@ -60,8 +60,6 @@ export async function POST(request: Request) {
               question: parsed.question,
               engine: parsed.engine,
               folder: parsed.folder,
-              model: parsed.model,
-              openAiRoute: parsed.openAiRoute,
               successResponse: result.ok ? result.response : undefined,
               errorResponse: result.ok ? undefined : result.error,
               assistantStream: finalizeAssistantStreamState(assistantStream)

apps/web/app/api/chat/threads/[threadId]/route.ts

@@ -52,8 +52,6 @@ export async function PATCH(request: Request, context: RouteContext) {
       threadId,
       userEmail: identity.userEmail,
       ...parsed,
-      model: parsed.model,
-      openAiRoute: parsed.openAiRoute
     });
 
     if (!thread) {

apps/web/app/api/models/route.ts

@@ -8,24 +8,17 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@
 import { Textarea } from "@/components/ui/textarea";
 import { InputGroup, InputGroupBody, InputGroupFooter } from "@/components/ui/input-group";
 import { LoadingDots } from "@/components/ui/loading-dots";
-import { ToggleGroup, ToggleGroupItem } from "@/components/ui/toggle-group";
-import { shouldShowOpenAiRouteToggle } from "@/lib/chat-local-state";
-import type { OpencodeModelId, OpencodeModelOption, OpencodeOpenAiRoute, SourceFolder } from "@/lib/schemas";
+import type { SourceFolder } from "@/lib/schemas";
 import { cn } from "@/lib/utils";
 
 type ChatComposerProps = {
   docked?: boolean;
   draftQuestion: string;
   onDraftQuestionChange: (value: string) => void;
-  selectedModel: OpencodeModelId;
-  onModelChange: (value: OpencodeModelId) => void;
-  selectedOpenAiRoute: OpencodeOpenAiRoute;
-  onOpenAiRouteChange: (value: OpencodeOpenAiRoute) => void;
   mobileSettingsOpen: boolean;
   onMobileSettingsOpenChange: (open: boolean) => void;
   selectedFolder: string;
   onFolderChange: (value: string) => void;
-  opencodeModels: OpencodeModelOption[];
   sourceFolders: SourceFolder[];
   loadingFolders: boolean;
   loadingAnswer: boolean;
@@ -37,24 +30,17 @@ export function ChatComposer({
   docked = false,
   draftQuestion,
   onDraftQuestionChange,
-  selectedModel,
-  onModelChange,
-  selectedOpenAiRoute,
-  onOpenAiRouteChange,
   mobileSettingsOpen,
   onMobileSettingsOpenChange,
   selectedFolder,
   onFolderChange,
-  opencodeModels,
   sourceFolders,
   loadingFolders,
   loadingAnswer,
   sourcesError,
   onSubmit
 }: ChatComposerProps) {
   const mobileTextareaRef = useRef<HTMLTextAreaElement | null>(null);
-  const selectedModelOption = opencodeModels.find((model) => model.id === selectedModel) ?? opencodeModels[0] ?? null;
-  const showOpenAiRouteToggle = shouldShowOpenAiRouteToggle(selectedModel);
 
   useEffect(() => {
     const textarea = mobileTextareaRef.current;
@@ -150,57 +136,6 @@ export function ChatComposer({
 
           <InputGroupFooter className={cn("hidden lg:flex", docked ? "chat-composer-footer" : undefined)}>
             <div className="flex flex-wrap items-center gap-3 text-[var(--text-tertiary)]">
-              {opencodeModels.length > 0 ? (
-                <Select
-                  value={selectedModel}
-                  onValueChange={(value) => onModelChange(value as OpencodeModelId)}
-                  disabled={loadingAnswer}
-                >
-                  <SelectTrigger
-                    className={cn(
-                      "linear-pill w-fit max-w-[320px] gap-3 border-[var(--border-strong)] px-4 py-2 font-[400] shadow-none transition-[width,padding,background-color,border-color,color] duration-300 ease-out",
-                      docked ? "chat-composer-pill h-9" : "bg-[var(--bg-page)]"
-                    )}
-                  >
-                    <span className="min-w-0 truncate text-left">
-                      {selectedModelOption?.label ?? "OpenCode model"}
-                    </span>
-                  </SelectTrigger>
-                  <SelectContent className="min-w-[280px]">
-                    {opencodeModels.map((model) => (
-                      <SelectItem key={model.id} value={model.id}>
-                        <div className="flex min-w-0 flex-col">
-                          <span>{model.label}</span>
-                          <span className="text-[12px] leading-[1.4] text-[var(--text-tertiary)]">{model.description}</span>
-                        </div>
-                      </SelectItem>
-                    ))}
-                  </SelectContent>
-                </Select>
-              ) : null}
-
-              {showOpenAiRouteToggle ? (
-                <ToggleGroup
-                  type="single"
-                  value={selectedOpenAiRoute}
-                  onValueChange={(value) => {
-                    if (value === "subscription" || value === "openrouter") {
-                      onOpenAiRouteChange(value);
-                    }
-                  }}
-                  disabled={loadingAnswer}
-                  className="h-9 rounded-full bg-[var(--bg-button-subtle)] p-1"
-                  aria-label="OpenAI route"
-                >
-                  <ToggleGroupItem value="subscription" className="h-7">
-                    Subscription
-                  </ToggleGroupItem>
-                  <ToggleGroupItem value="openrouter" className="h-7">
-                    OpenRouter
-                  </ToggleGroupItem>
-                </ToggleGroup>
-              ) : null}
-
               <Select
                 value={selectedFolder || "__all__"}
                 onValueChange={(value) => onFolderChange(value === "__all__" ? "" : value)}
@@ -245,13 +180,8 @@ export function ChatComposer({
         <MobileChatSettings
           open={mobileSettingsOpen}
           onOpenChange={onMobileSettingsOpenChange}
-          selectedModel={selectedModel}
-          onModelChange={onModelChange}
-          selectedOpenAiRoute={selectedOpenAiRoute}
-          onOpenAiRouteChange={onOpenAiRouteChange}
           selectedFolder={selectedFolder}
           onFolderChange={onFolderChange}
-          opencodeModels={opencodeModels}
           sourceFolders={sourceFolders}
           loadingFolders={loadingFolders}
           loadingAnswer={loadingAnswer}

apps/web/components/chat-composer.tsx

@@ -3,20 +3,13 @@
 import { Globe } from "lucide-react";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 import { Sheet, SheetContent, SheetDescription, SheetHeader, SheetTitle } from "@/components/ui/sheet";
-import { ToggleGroup, ToggleGroupItem } from "@/components/ui/toggle-group";
-import { shouldShowOpenAiRouteToggle } from "@/lib/chat-local-state";
-import type { OpencodeModelId, OpencodeModelOption, OpencodeOpenAiRoute, SourceFolder } from "@/lib/schemas";
+import type { SourceFolder } from "@/lib/schemas";
 
 type MobileChatSettingsProps = {
   open: boolean;
   onOpenChange: (open: boolean) => void;
-  selectedModel: OpencodeModelId;
-  onModelChange: (value: OpencodeModelId) => void;
-  selectedOpenAiRoute: OpencodeOpenAiRoute;
-  onOpenAiRouteChange: (value: OpencodeOpenAiRoute) => void;
   selectedFolder: string;
   onFolderChange: (value: string) => void;
-  opencodeModels: OpencodeModelOption[];
   sourceFolders: SourceFolder[];
   loadingFolders: boolean;
   loadingAnswer: boolean;
@@ -25,77 +18,21 @@ type MobileChatSettingsProps = {
 export function MobileChatSettings({
   open,
   onOpenChange,
-  selectedModel,
-  onModelChange,
-  selectedOpenAiRoute,
-  onOpenAiRouteChange,
   selectedFolder,
   onFolderChange,
-  opencodeModels,
   sourceFolders,
   loadingFolders,
   loadingAnswer
 }: MobileChatSettingsProps) {
-  const selectedModelOption = opencodeModels.find((model) => model.id === selectedModel) ?? opencodeModels[0] ?? null;
-  const showOpenAiRouteToggle = shouldShowOpenAiRouteToggle(selectedModel);
-
   return (
     <Sheet open={open} onOpenChange={onOpenChange}>
       <SheetContent side="bottom" className="lg:hidden">
         <SheetHeader>
           <SheetTitle>Chat settings</SheetTitle>
-          <SheetDescription>Choose the model and source scope for this conversation.</SheetDescription>
+          <SheetDescription>Choose the source scope for this conversation.</SheetDescription>
         </SheetHeader>
 
         <div className="mt-6 space-y-5">
-          {opencodeModels.length > 0 ? (
-            <div className="space-y-2">
-              <p className="text-[12px] font-[600] uppercase tracking-[0.12em] text-[var(--text-quaternary)]">Model</p>
-              <Select value={selectedModel} onValueChange={(value) => onModelChange(value as OpencodeModelId)} disabled={loadingAnswer}>
-                <SelectTrigger className="linear-subsurface h-11 w-full min-w-0 justify-start rounded-2xl px-4 text-left shadow-none">
-                  <span className="block min-w-0 flex-1 truncate text-left">
-                    {selectedModelOption?.label ?? "OpenCode model"}
-                  </span>
-                </SelectTrigger>
-                <SelectContent>
-                  {opencodeModels.map((model) => (
-                    <SelectItem key={model.id} value={model.id}>
-                      <div className="flex min-w-0 flex-col">
-                        <span className="truncate">{model.label}</span>
-                        <span className="break-words text-[12px] leading-[1.4] text-[var(--text-tertiary)]">{model.description}</span>
-                      </div>
-                    </SelectItem>
-                  ))}
-                </SelectContent>
-              </Select>
-            </div>
-          ) : null}
-
-          {showOpenAiRouteToggle ? (
-            <div className="space-y-2">
-              <p className="text-[12px] font-[600] uppercase tracking-[0.12em] text-[var(--text-quaternary)]">OpenAI route</p>
-              <ToggleGroup
-                type="single"
-                value={selectedOpenAiRoute}
-                onValueChange={(value) => {
-                  if (value === "subscription" || value === "openrouter") {
-                    onOpenAiRouteChange(value);
-                  }
-                }}
-                disabled={loadingAnswer}
-                className="grid grid-cols-2 rounded-2xl bg-[var(--bg-button-subtle)] p-1"
-                aria-label="OpenAI route"
-              >
-                <ToggleGroupItem value="subscription" className="h-10 rounded-xl px-2 text-[13px]">
-                  Subscription
-                </ToggleGroupItem>
-                <ToggleGroupItem value="openrouter" className="h-10 rounded-xl px-2 text-[13px]">
-                  OpenRouter
-                </ToggleGroupItem>
-              </ToggleGroup>
-            </div>
-          ) : null}
-
           <div className="space-y-2">
             <p className="text-[12px] font-[600] uppercase tracking-[0.12em] text-[var(--text-quaternary)]">Sources</p>
             <Select