refactor(session): align namespace imports and inline trivial helpers

packages/opencode/src/session/compaction.ts

@@ -1,10 +1,10 @@
 import { SessionLegacy } from "@opencode-ai/core/session/legacy"
-import * as Session from "./session"
+import { Session } from "./session"
 import { SessionID, MessageID, PartID } from "./schema"
 import { Provider } from "@/provider/provider"
 import { MessageV2 } from "./message-v2"
 import { Token } from "@/util/token"
-import * as Log from "@opencode-ai/core/util/log"
+import { Log } from "@opencode-ai/core/util/log"
 import { SessionProcessor } from "./processor"
 import { Agent } from "@/agent/agent"
 import { Plugin } from "@/plugin"

packages/opencode/src/session/instruction.ts

@@ -12,12 +12,6 @@ import { Global } from "@opencode-ai/core/global"
 import type { MessageV2 } from "./message-v2"
 import type { MessageID } from "./schema"
 
-const files = (disableClaudeCodePrompt: boolean) => [
-  "AGENTS.md",
-  ...(disableClaudeCodePrompt ? [] : ["CLAUDE.md"]),
-  "CONTEXT.md", // deprecated
-]
-
 function extract(messages: SessionLegacy.WithParts[]) {
   const paths = new Set<string>()
   for (const msg of messages) {
@@ -65,7 +59,11 @@ export const layer: Layer.Layer<
       path.join(global.config, "AGENTS.md"),
       ...(!flags.disableClaudeCodePrompt ? [path.join(global.home, ".claude", "CLAUDE.md")] : []),
     ]
-    const instructionFiles = files(flags.disableClaudeCodePrompt)
+    const instructionFiles = [
+      "AGENTS.md",
+      ...(!flags.disableClaudeCodePrompt ? ["CLAUDE.md"] : []),
+      "CONTEXT.md", // deprecated
+    ]
 
     const state = yield* InstanceState.make(
       Effect.fn("Instruction.state")(() =>

packages/opencode/src/session/llm.ts

@@ -1,7 +1,7 @@
 import { Provider } from "@/provider/provider"
 import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import { serviceUse } from "@opencode-ai/core/effect/service-use"
-import * as Log from "@opencode-ai/core/util/log"
+import { Log } from "@opencode-ai/core/util/log"
 import { Context, Effect, Layer } from "effect"
 import * as Stream from "effect/Stream"
 import { streamText, wrapLanguageModel, type ModelMessage, type Tool } from "ai"

packages/opencode/src/session/message-v2.ts

@@ -30,7 +30,7 @@ import { inArray } from "drizzle-orm"
 import { lt } from "drizzle-orm"
 import { or } from "drizzle-orm"
 import { MessageTable, PartTable, SessionTable } from "@opencode-ai/core/session/sql"
-import * as ProviderError from "@/provider/error"
+import { ProviderError } from "@/provider/error"
 import { iife } from "@/util/iife"
 import { errorMessage } from "@/util/error"
 import { isMedia } from "@/util/media"

packages/opencode/src/session/processor.ts

@@ -7,7 +7,7 @@ import { Config } from "@/config/config"
 import { Permission } from "@/permission"
 import { Plugin } from "@/plugin"
 import { Snapshot } from "@/snapshot"
-import * as Session from "./session"
+import { Session } from "./session"
 import { LLM } from "./llm"
 import { MessageV2 } from "./message-v2"
 import { isOverflow } from "./overflow"
@@ -19,7 +19,7 @@ import { SessionSummary } from "./summary"
 import type { Provider } from "@/provider/provider"
 import { Question } from "@/question"
 import { errorMessage } from "@/util/error"
-import * as Log from "@opencode-ai/core/util/log"
+import { Log } from "@opencode-ai/core/util/log"
 import { isRecord } from "@/util/record"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { Database } from "@opencode-ai/core/database/database"
@@ -301,8 +301,6 @@ export const layer = Layer.effect(
         }
       }
 
-      const toolInput = (value: unknown): Record<string, any> => (isRecord(value) ? value : { value })
-
       const handleEvent = Effect.fnUntraced(function* (value: StreamEvent) {
         switch (value.type) {
           case "reasoning-start":
@@ -380,7 +378,7 @@ export const layer = Layer.effect(
               throw new Error(`Tool call not allowed while generating summary: ${value.name}`)
             }
             const toolCall = yield* ensureToolCall(value)
-            const input = toolInput(value.input)
+            const input = isRecord(value.input) ? value.input : { value: value.input }
             if (!toolCall.call.inputEnded) {
               // TODO(v2): Temporary dual-write while migrating session messages to v2 events.
               if (flags.experimentalEventSystem) {

packages/opencode/src/session/prompt.ts

@@ -3,9 +3,9 @@ import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import os from "os"
 import { SessionID, MessageID, PartID } from "./schema"
 import { MessageV2 } from "./message-v2"
-import * as Log from "@opencode-ai/core/util/log"
+import { Log } from "@opencode-ai/core/util/log"
 import { SessionRevert } from "./revert"
-import * as Session from "./session"
+import { Session } from "./session"
 import { Agent } from "../agent/agent"
 import { Provider } from "@/provider/provider"
 
@@ -148,10 +148,6 @@ export const layer = Layer.effect(
       const parts: Types.DeepMutable<PromptInput["parts"]> = [{ type: "text", text: template }]
       const files = ConfigMarkdown.files(template)
       const seen = new Set<string>()
-      const mentionSource = (match: RegExpMatchArray) => {
-        const start = match.index ?? 0
-        return { value: match[0], start, end: start + match[0].length }
-      }
       yield* Effect.forEach(
         files,
         Effect.fnUntraced(function* (match) {
@@ -164,7 +160,8 @@ export const layer = Layer.effect(
           const alias = slash === -1 ? name : name.slice(0, slash)
           const reference = yield* references.get(alias)
           if (reference) {
-            const source = mentionSource(match)
+            const start = match.index ?? 0
+            const source = { value: match[0], start, end: start + match[0].length }
             if (reference.kind === "invalid") {
               parts.push(
                 referenceTextPart({ reference, source, target: slash === -1 ? undefined : name.slice(slash + 1) }),

packages/opencode/src/session/reminders.ts

@@ -7,7 +7,7 @@ import { InstanceState } from "@/effect/instance-state"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { PartID } from "./schema"
 import { MessageV2 } from "./message-v2"
-import * as Session from "./session"
+import { Session } from "./session"
 import PROMPT_PLAN from "./prompt/plan.txt"
 import BUILD_SWITCH from "./prompt/build-switch.txt"
 import PLAN_MODE from "./prompt/plan-mode.txt"

packages/opencode/src/session/revert.ts

@@ -3,8 +3,8 @@ import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { Snapshot } from "../snapshot"
 import { Storage } from "@/storage/storage"
-import * as Log from "@opencode-ai/core/util/log"
-import * as Session from "./session"
+import { Log } from "@opencode-ai/core/util/log"
+import { Session } from "./session"
 import { MessageV2 } from "./message-v2"
 import { SessionID, MessageID, PartID } from "./schema"
 import { SessionRunState } from "./run-state"

packages/opencode/src/session/run-state.ts

@@ -3,7 +3,7 @@ import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import { Runner } from "@/effect/runner"
 import { BackgroundJob } from "@/background/job"
 import { Effect, Latch, Layer, Scope, Context } from "effect"
-import * as Session from "./session"
+import { Session } from "./session"
 import { MessageV2 } from "./message-v2"
 import { SessionID } from "./schema"
 import { SessionStatus } from "./status"

packages/opencode/src/session/session.ts

@@ -25,7 +25,7 @@ import { or } from "drizzle-orm"
 import type { SQL } from "drizzle-orm"
 import { PartTable, SessionTable } from "@opencode-ai/core/session/sql"
 import { ProjectTable } from "@opencode-ai/core/project/sql"
-import * as Log from "@opencode-ai/core/util/log"
+import { Log } from "@opencode-ai/core/util/log"
 import { MessageV2 } from "./message-v2"
 import type { InstanceContext } from "../project/instance-context"
 import { InstanceState } from "@/effect/instance-state"
@@ -48,10 +48,6 @@ const runtime = makeRuntime(Database.Service, Database.defaultLayer)
 const parentTitlePrefix = "New session - "
 const childTitlePrefix = "Child session - "
 
-function createDefaultTitle(isChild = false) {
-  return (isChild ? childTitlePrefix : parentTitlePrefix) + new Date().toISOString()
-}
-
 export function isDefaultTitle(title: string) {
   return new RegExp(
     `^(${parentTitlePrefix}|${childTitlePrefix})\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\.\\d{3}Z$`,
@@ -581,7 +577,7 @@ export const layer: Layer.Layer<
         path: input.path,
         workspaceID: input.workspaceID,
         parentID: input.parentID,
-        title: input.title ?? createDefaultTitle(!!input.parentID),
+        title: input.title ?? (input.parentID ? childTitlePrefix : parentTitlePrefix) + new Date().toISOString(),
         agent: input.agent,
         model: input.model,
         metadata: input.metadata,

packages/opencode/src/session/summary.ts

@@ -2,7 +2,7 @@ import { Effect, Layer, Context, Schema } from "effect"
 import { SessionLegacy } from "@opencode-ai/core/session/legacy"
 import { EventV2Bridge } from "@/event-v2-bridge"
 import { Snapshot } from "@/snapshot"
-import * as Session from "./session"
+import { Session } from "./session"
 import { SessionID, MessageID } from "./schema"
 import { Config } from "@/config/config"
 

packages/opencode/src/session/tools.ts

@@ -14,10 +14,10 @@ import type { TaskPromptOps } from "@/tool/task"
 import { type Tool as AITool, tool, jsonSchema, type ToolExecutionOptions, asSchema } from "ai"
 import { Effect } from "effect"
 import { MessageV2 } from "./message-v2"
-import * as Session from "./session"
+import { Session } from "./session"
 import { SessionProcessor } from "./processor"
 import { PartID } from "./schema"
-import * as Log from "@opencode-ai/core/util/log"
+import { Log } from "@opencode-ai/core/util/log"
 import { EffectBridge } from "@/effect/bridge"
 import { ProviderV2 } from "@opencode-ai/core/provider"