fix: add groupContextFromAll config for backward compat

- groupContextFromAll: boolean (default: false) - opt-in flag
- When enabled, group messages from senders not in groupAllowFrom
  are stored as pending context instead of being dropped
- Available at both top-level whatsapp config and per-account level
- Added to types, zod schema, resolved account, and access control
- Default false preserves existing behavior

src/config/types.whatsapp.ts

@@ -47,6 +47,12 @@ export type WhatsAppConfig = {
    * - "allowlist": only allow group messages from senders in groupAllowFrom/allowFrom
    */
   groupPolicy?: GroupPolicy;
+  /**
+   * When true, messages from group members not in groupAllowFrom are still
+   * stored as pending context (visible in "[Chat messages since your last reply]")
+   * even though they cannot trigger a reply. Default: false (old behavior: drop entirely).
+   */
+  groupContextFromAll?: boolean;
   /** Max group messages to keep as history context (0 disables). */
   historyLimit?: number;
   /** Max DM turns to keep as history context. */
@@ -118,6 +124,8 @@ export type WhatsAppAccountConfig = {
   allowFrom?: string[];
   groupAllowFrom?: string[];
   groupPolicy?: GroupPolicy;
+  /** Store context from non-allowlisted group senders (default: false). */
+  groupContextFromAll?: boolean;
   /** Max group messages to keep as history context (0 disables). */
   historyLimit?: number;
   /** Max DM turns to keep as history context. */

src/config/zod-schema.providers-whatsapp.ts

@@ -28,6 +28,7 @@ export const WhatsAppAccountSchema = z
     allowFrom: z.array(z.string()).optional(),
     groupAllowFrom: z.array(z.string()).optional(),
     groupPolicy: GroupPolicySchema.optional().default("allowlist"),
+    groupContextFromAll: z.boolean().optional().default(false),
     historyLimit: z.number().int().min(0).optional(),
     dmHistoryLimit: z.number().int().min(0).optional(),
     dms: z.record(z.string(), DmConfigSchema.optional()).optional(),
@@ -85,6 +86,7 @@ export const WhatsAppConfigSchema = z
     allowFrom: z.array(z.string()).optional(),
     groupAllowFrom: z.array(z.string()).optional(),
     groupPolicy: GroupPolicySchema.optional().default("allowlist"),
+    groupContextFromAll: z.boolean().optional().default(false),
     historyLimit: z.number().int().min(0).optional(),
     dmHistoryLimit: z.number().int().min(0).optional(),
     dms: z.record(z.string(), DmConfigSchema.optional()).optional(),

src/web/accounts.ts

@@ -20,6 +20,7 @@ export type ResolvedWhatsAppAccount = {
   allowFrom?: string[];
   groupAllowFrom?: string[];
   groupPolicy?: GroupPolicy;
+  groupContextFromAll?: boolean;
   dmPolicy?: DmPolicy;
   textChunkLimit?: number;
   chunkMode?: "length" | "newline";
@@ -150,6 +151,7 @@ export function resolveWhatsAppAccount(params: {
     allowFrom: accountCfg?.allowFrom ?? rootCfg?.allowFrom,
     groupAllowFrom: accountCfg?.groupAllowFrom ?? rootCfg?.groupAllowFrom,
     groupPolicy: accountCfg?.groupPolicy ?? rootCfg?.groupPolicy,
+    groupContextFromAll: accountCfg?.groupContextFromAll ?? rootCfg?.groupContextFromAll,
     textChunkLimit: accountCfg?.textChunkLimit ?? rootCfg?.textChunkLimit,
     chunkMode: accountCfg?.chunkMode ?? rootCfg?.chunkMode,
     mediaMaxMb: accountCfg?.mediaMaxMb ?? rootCfg?.mediaMaxMb,

src/web/inbound/access-control.ts

@@ -53,6 +53,8 @@ export async function checkInboundAccessControl(params: {
   const groupAllowFrom =
     account.groupAllowFrom ??
     (configuredAllowFrom && configuredAllowFrom.length > 0 ? configuredAllowFrom : undefined);
+  const groupContextFromAll =
+    account.groupContextFromAll ?? cfg.channels?.whatsapp?.groupContextFromAll ?? false;
   const isSamePhone = params.from === params.selfE164;
   const isSelfChat = isSelfChatMode(params.selfE164, configuredAllowFrom);
   const pairingGraceMs =
@@ -107,12 +109,24 @@ export async function checkInboundAccessControl(params: {
       groupHasWildcard ||
       (params.senderE164 != null && normalizedGroupAllowFrom.includes(params.senderE164));
     if (!senderAllowed) {
+      if (groupContextFromAll) {
+        logVerbose(
+          `Group message from ${params.senderE164 ?? "unknown sender"} not in groupAllowFrom (storing for context)`,
+        );
+        return {
+          allowed: false,
+          storeForContext: true,
+          shouldMarkRead: false,
+          isSelfChat,
+          resolvedAccountId: account.accountId,
+        };
+      }
       logVerbose(
-        `Group message from ${params.senderE164 ?? "unknown sender"} not in groupAllowFrom (storing for context)`,
+        `Blocked group message from ${params.senderE164 ?? "unknown sender"} (groupPolicy: allowlist)`,
       );
       return {
         allowed: false,
-        storeForContext: true,
+        storeForContext: false,
         shouldMarkRead: false,
         isSelfChat,
         resolvedAccountId: account.accountId,