diff --git a/src/hooks/anthropic-auto-compact/pruning-deduplication.ts b/src/hooks/anthropic-auto-compact/pruning-deduplication.ts
index f2f1851..b3e8b52 100644
--- a/src/hooks/anthropic-auto-compact/pruning-deduplication.ts
+++ b/src/hooks/anthropic-auto-compact/pruning-deduplication.ts
@@ -3,19 +3,13 @@ import { join } from "node:path"
 import type { PruningState, ToolCallSignature } from "./pruning-types"
 import { estimateTokens } from "./pruning-types"
 import { log } from "../../shared/logger"
+import { MESSAGE_STORAGE } from "../../features/hook-message-injector"
 
 export interface DeduplicationConfig {
   enabled: boolean
   protectedTools?: string[]
 }
 
-const MESSAGE_STORAGE = join(
-  process.env.HOME || process.env.USERPROFILE || "",
-  ".config",
-  "opencode",
-  "sessions"
-)
-
 interface ToolPart {
   type: string
   callID?: string
diff --git a/src/hooks/anthropic-auto-compact/pruning-purge-errors.ts b/src/hooks/anthropic-auto-compact/pruning-purge-errors.ts
index 89f9444..0cb36d1 100644
--- a/src/hooks/anthropic-auto-compact/pruning-purge-errors.ts
+++ b/src/hooks/anthropic-auto-compact/pruning-purge-errors.ts
@@ -3,6 +3,7 @@ import { join } from "node:path"
 import type { PruningState, ErroredToolCall } from "./pruning-types"
 import { estimateTokens } from "./pruning-types"
 import { log } from "../../shared/logger"
+import { MESSAGE_STORAGE } from "../../features/hook-message-injector"
 
 export interface PurgeErrorsConfig {
   enabled: boolean
@@ -10,13 +11,6 @@ export interface PurgeErrorsConfig {
   protectedTools?: string[]
 }
 
-const MESSAGE_STORAGE = join(
-  process.env.HOME || process.env.USERPROFILE || "",
-  ".config",
-  "opencode",
-  "sessions"
-)
-
 interface ToolPart {
   type: string
   callID?: string
diff --git a/src/hooks/anthropic-auto-compact/pruning-storage.ts b/src/hooks/anthropic-auto-compact/pruning-storage.ts
index 76bb500..462e1d5 100644
--- a/src/hooks/anthropic-auto-compact/pruning-storage.ts
+++ b/src/hooks/anthropic-auto-compact/pruning-storage.ts
@@ -3,13 +3,7 @@ import { join } from "node:path"
 import type { PruningState } from "./pruning-types"
 import { estimateTokens } from "./pruning-types"
 import { log } from "../../shared/logger"
-
-const MESSAGE_STORAGE = join(
-  process.env.HOME || process.env.USERPROFILE || "",
-  ".config",
-  "opencode",
-  "sessions"
-)
+import { MESSAGE_STORAGE } from "../../features/hook-message-injector"
 
 function getMessageDir(sessionID: string): string | null {
   if (!existsSync(MESSAGE_STORAGE)) return null
diff --git a/src/hooks/anthropic-auto-compact/pruning-supersede.ts b/src/hooks/anthropic-auto-compact/pruning-supersede.ts
index c2b2015..0a75d80 100644
--- a/src/hooks/anthropic-auto-compact/pruning-supersede.ts
+++ b/src/hooks/anthropic-auto-compact/pruning-supersede.ts
@@ -3,19 +3,13 @@ import { join } from "node:path"
 import type { PruningState, FileOperation } from "./pruning-types"
 import { estimateTokens } from "./pruning-types"
 import { log } from "../../shared/logger"
+import { MESSAGE_STORAGE } from "../../features/hook-message-injector"
 
 export interface SupersedeWritesConfig {
   enabled: boolean
   aggressive: boolean
 }
 
-const MESSAGE_STORAGE = join(
-  process.env.HOME || process.env.USERPROFILE || "",
-  ".config",
-  "opencode",
-  "sessions"
-)
-
 interface ToolPart {
   type: string
   callID?: string