feat: add project HttpApi read slice behind OPENCODE_EXPERIMENTAL_HTTPAPI

- migrate Project.Info from Zod to Effect Schema (Schema.Class for Info,
  Schema.Struct for inner Icon/Commands/Time to avoid SDK drift)
- derive .zod compat surfaces for Hono routes and UpdateInput
- add project httpapi route with list and current endpoints
- wire into httpapi/server.ts and bridge behind flag
- fix bridge ordering: mount bridge sub-app at / before all Hono routes
  so Effect handlers always take priority when the flag is on
- zero SDK diff confirmed

packages/opencode/src/project/project.ts

@@ -1,4 +1,5 @@
 import z from "zod"
+import { zod } from "@/util/effect-zod"
 import { and, Database, eq } from "../storage/db"
 import { ProjectTable } from "./project.sql"
 import { SessionTable } from "../session/session.sql"
@@ -8,7 +9,7 @@ import { BusEvent } from "@/bus/bus-event"
 import { GlobalBus } from "@/bus/global"
 import { which } from "../util/which"
 import { ProjectID } from "./schema"
-import { Effect, Layer, Path, Scope, Context, Stream } from "effect"
+import { Effect, Layer, Path, Scope, Context, Stream, Schema } from "effect"
 import { ChildProcess, ChildProcessSpawner } from "effect/unstable/process"
 import { NodePath } from "@effect/platform-node"
 import { AppFileSystem } from "@opencode-ai/shared/filesystem"
@@ -17,38 +18,39 @@ import * as CrossSpawnSpawner from "@/effect/cross-spawn-spawner"
 export namespace Project {
   const log = Log.create({ service: "project" })
 
-  export const Info = z
-    .object({
-      id: ProjectID.zod,
-      worktree: z.string(),
-      vcs: z.literal("git").optional(),
-      name: z.string().optional(),
-      icon: z
-        .object({
-          url: z.string().optional(),
-          override: z.string().optional(),
-          color: z.string().optional(),
-        })
-        .optional(),
-      commands: z
-        .object({
-          start: z.string().optional().describe("Startup script to run when creating a new workspace (worktree)"),
-        })
-        .optional(),
-      time: z.object({
-        created: z.number(),
-        updated: z.number(),
-        initialized: z.number().optional(),
-      }),
-      sandboxes: z.array(z.string()),
-    })
-    .meta({
-      ref: "Project",
-    })
-  export type Info = z.infer<typeof Info>
+  const IconSchema = Schema.Struct({
+    url: Schema.optional(Schema.String),
+    override: Schema.optional(Schema.String),
+    color: Schema.optional(Schema.String),
+  })
+
+  const CommandsSchema = Schema.Struct({
+    start: Schema.optional(
+      Schema.String.annotate({ description: "Startup script to run when creating a new workspace (worktree)" }),
+    ),
+  })
+
+  const TimeSchema = Schema.Struct({
+    created: Schema.Number,
+    updated: Schema.Number,
+    initialized: Schema.optional(Schema.Number),
+  })
+
+  export class Info extends Schema.Class<Info>("Project")({
+    id: ProjectID,
+    worktree: Schema.String,
+    vcs: Schema.optional(Schema.Literal("git")),
+    name: Schema.optional(Schema.String),
+    icon: Schema.optional(IconSchema),
+    commands: Schema.optional(CommandsSchema),
+    time: TimeSchema,
+    sandboxes: Schema.mutable(Schema.Array(Schema.String)),
+  }) {
+    static readonly zod = zod(this)
+  }
 
   export const Event = {
-    Updated: BusEvent.define("project.updated", Info),
+    Updated: BusEvent.define("project.updated", Info.zod),
   }
 
   type Row = typeof ProjectTable.$inferSelect
@@ -58,10 +60,10 @@ export namespace Project {
       row.icon_url || row.icon_color
         ? { url: row.icon_url ?? undefined, color: row.icon_color ?? undefined }
         : undefined
-    return {
-      id: row.id,
+    return new Info({
+      id: row.id as ProjectID,
       worktree: row.worktree,
-      vcs: row.vcs ? Info.shape.vcs.parse(row.vcs) : undefined,
+      vcs: row.vcs === "git" ? "git" : undefined,
       name: row.name ?? undefined,
       icon,
       time: {
@@ -71,14 +73,14 @@ export namespace Project {
       },
       sandboxes: row.sandboxes,
       commands: row.commands ?? undefined,
-    }
+    })
   }
 
   export const UpdateInput = z.object({
     projectID: ProjectID.zod,
     name: z.string().optional(),
-    icon: Info.shape.icon.optional(),
-    commands: Info.shape.commands.optional(),
+    icon: zod(IconSchema).optional(),
+    commands: zod(CommandsSchema).optional(),
   })
   export type UpdateInput = z.infer<typeof UpdateInput>
 
@@ -142,7 +144,7 @@ export namespace Project {
           }),
         )
 
-      const fakeVcs = Info.shape.vcs.parse(Flag.OPENCODE_FAKE_VCS)
+      const fakeVcs: Info["vcs"] = Flag.OPENCODE_FAKE_VCS === "git" ? "git" : undefined
 
       const resolveGitPath = (cwd: string, name: string) => {
         if (!name) return cwd
@@ -249,27 +251,23 @@ export namespace Project {
         const row = yield* db((d) => d.select().from(ProjectTable).where(eq(ProjectTable.id, data.id)).get())
         const existing = row
           ? fromRow(row)
-          : {
-              id: data.id,
+          : new Info({
+              id: data.id as ProjectID,
               worktree: data.worktree,
               vcs: data.vcs,
-              sandboxes: [] as string[],
+              sandboxes: [],
               time: { created: Date.now(), updated: Date.now() },
-            }
+            })
 
         if (Flag.OPENCODE_EXPERIMENTAL_ICON_DISCOVERY)
           yield* discover(existing).pipe(Effect.ignore, Effect.forkIn(scope))
 
-        const result: Info = {
-          ...existing,
-          worktree: data.worktree,
-          vcs: data.vcs,
-          time: { ...existing.time, updated: Date.now() },
-        }
-        if (data.sandbox !== result.worktree && !result.sandboxes.includes(data.sandbox))
-          result.sandboxes.push(data.sandbox)
-        result.sandboxes = yield* Effect.forEach(
-          result.sandboxes,
+        const sandboxes =
+          data.sandbox !== existing.worktree && !existing.sandboxes.includes(data.sandbox)
+            ? [...existing.sandboxes, data.sandbox]
+            : existing.sandboxes
+        const filteredSandboxes = yield* Effect.forEach(
+          sandboxes,
           (s) =>
             fs.exists(s).pipe(
               Effect.orDie,
@@ -278,6 +276,14 @@ export namespace Project {
           { concurrency: "unbounded" },
         ).pipe(Effect.map((arr) => arr.filter((x): x is string => x !== undefined)))
 
+        const result = new Info({
+          ...existing,
+          worktree: data.worktree,
+          vcs: data.vcs,
+          time: { ...existing.time, updated: Date.now() },
+          sandboxes: filteredSandboxes,
+        })
+
         yield* db((d) =>
           d
             .insert(ProjectTable)

packages/opencode/src/server/instance/httpapi/project.ts

@@ -0,0 +1,62 @@
+import { Instance } from "@/project/instance"
+import { Project } from "@/project/project"
+import { Effect, Layer, Schema } from "effect"
+import { HttpApi, HttpApiBuilder, HttpApiEndpoint, HttpApiGroup, OpenApi } from "effect/unstable/httpapi"
+
+const root = "/project"
+
+export const ProjectApi = HttpApi.make("project")
+  .add(
+    HttpApiGroup.make("project")
+      .add(
+        HttpApiEndpoint.get("list", root, {
+          success: Schema.Array(Project.Info),
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "project.list",
+            summary: "List all projects",
+            description: "Get a list of projects that have been opened with OpenCode.",
+          }),
+        ),
+        HttpApiEndpoint.get("current", `${root}/current`, {
+          success: Project.Info,
+        }).annotateMerge(
+          OpenApi.annotations({
+            identifier: "project.current",
+            summary: "Get current project",
+            description: "Retrieve the currently active project that OpenCode is working with.",
+          }),
+        ),
+      )
+      .annotateMerge(
+        OpenApi.annotations({
+          title: "project",
+          description: "Project routes.",
+        }),
+      ),
+  )
+  .annotateMerge(
+    OpenApi.annotations({
+      title: "opencode HttpApi",
+      version: "0.0.1",
+      description: "Effect HttpApi surface for instance routes.",
+    }),
+  )
+
+export const projectHandlers = Layer.unwrap(
+  Effect.gen(function* () {
+    const svc = yield* Project.Service
+
+    const list = Effect.fn("ProjectHttpApi.list")(function* () {
+      return yield* svc.list()
+    })
+
+    const current = Effect.fn("ProjectHttpApi.current")(function* () {
+      return Instance.project
+    })
+
+    return HttpApiBuilder.group(ProjectApi, "project", (handlers) =>
+      handlers.handle("list", list).handle("current", current),
+    )
+  }),
+).pipe(Layer.provide(Project.defaultLayer))

packages/opencode/src/server/instance/httpapi/server.ts

@@ -11,6 +11,7 @@ import { Instance } from "@/project/instance"
 import { lazy } from "@/util/lazy"
 import { Filesystem } from "@/util"
 import { PermissionApi, permissionHandlers } from "./permission"
+import { ProjectApi, projectHandlers } from "./project"
 import { ProviderApi, providerHandlers } from "./provider"
 import { QuestionApi, questionHandlers } from "./question"
 
@@ -109,11 +110,13 @@ export namespace ExperimentalHttpApiServer {
   const QuestionSecured = QuestionApi.middleware(Authorization)
   const PermissionSecured = PermissionApi.middleware(Authorization)
   const ProviderSecured = ProviderApi.middleware(Authorization)
+  const ProjectSecured = ProjectApi.middleware(Authorization)
 
   export const routes = Layer.mergeAll(
     HttpApiBuilder.layer(QuestionSecured).pipe(Layer.provide(questionHandlers)),
     HttpApiBuilder.layer(PermissionSecured).pipe(Layer.provide(permissionHandlers)),
     HttpApiBuilder.layer(ProviderSecured).pipe(Layer.provide(providerHandlers)),
+    HttpApiBuilder.layer(ProjectSecured).pipe(Layer.provide(projectHandlers)),
   ).pipe(
     Layer.provide(auth),
     Layer.provide(normalize),

packages/opencode/src/server/instance/index.ts

@@ -30,14 +30,7 @@ import { WorkspaceRouterMiddleware } from "./middleware"
 import { AppRuntime } from "@/effect/app-runtime"
 
 export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
-  const app = new Hono()
-    .use(WorkspaceRouterMiddleware(upgrade))
-    .route("/project", ProjectRoutes())
-    .route("/pty", PtyRoutes(upgrade))
-    .route("/config", ConfigRoutes())
-    .route("/experimental", ExperimentalRoutes())
-    .route("/session", SessionRoutes())
-    .route("/permission", PermissionRoutes())
+  const app = new Hono().use(WorkspaceRouterMiddleware(upgrade))
 
   if (Flag.OPENCODE_EXPERIMENTAL_HTTPAPI) {
     const handler = ExperimentalHttpApiServer.webHandler().handler
@@ -47,9 +40,17 @@ export const InstanceRoutes = (upgrade: UpgradeWebSocket): Hono => {
       .all("/permission", (c) => handler(c.req.raw))
       .all("/permission/*", (c) => handler(c.req.raw))
       .all("/provider/auth", (c) => handler(c.req.raw))
+      .all("/project", (c) => handler(c.req.raw))
+      .all("/project/*", (c) => handler(c.req.raw))
   }
 
   return app
+    .route("/project", ProjectRoutes())
+    .route("/pty", PtyRoutes(upgrade))
+    .route("/config", ConfigRoutes())
+    .route("/experimental", ExperimentalRoutes())
+    .route("/session", SessionRoutes())
+    .route("/permission", PermissionRoutes())
     .route("/question", QuestionRoutes())
     .route("/provider", ProviderRoutes())
     .route("/sync", SyncRoutes())

packages/opencode/src/server/instance/project.ts

@@ -23,7 +23,7 @@ export const ProjectRoutes = lazy(() =>
             description: "List of projects",
             content: {
               "application/json": {
-                schema: resolver(Project.Info.array()),
+                schema: resolver(z.array(Project.Info.zod)),
               },
             },
           },
@@ -45,7 +45,7 @@ export const ProjectRoutes = lazy(() =>
             description: "Current project information",
             content: {
               "application/json": {
-                schema: resolver(Project.Info),
+                schema: resolver(Project.Info.zod),
               },
             },
           },
@@ -66,7 +66,7 @@ export const ProjectRoutes = lazy(() =>
             description: "Project information after git initialization",
             content: {
               "application/json": {
-                schema: resolver(Project.Info),
+                schema: resolver(Project.Info.zod),
               },
             },
           },
@@ -99,7 +99,7 @@ export const ProjectRoutes = lazy(() =>
             description: "Updated project information",
             content: {
               "application/json": {
-                schema: resolver(Project.Info),
+                schema: resolver(Project.Info.zod),
               },
             },
           },