diff --git a/src/__tests__/unit/tui/local-commands.test.ts b/src/__tests__/unit/tui/local-commands.test.ts
index ea5f038..6085abe 100644
--- a/src/__tests__/unit/tui/local-commands.test.ts
+++ b/src/__tests__/unit/tui/local-commands.test.ts
@@ -54,6 +54,13 @@ describe('runLocalCommand', () => {
     expect(isLikelyLocalCommand('/Users/roackb2/Desktop/screenshot.png')).toBe(false);
   });
 
+  it('does not expose slash hints or completions for absolute unix paths', () => {
+    const pathLikeDraft = '/Users/roackb2/Desktop/screenshot.png';
+
+    expect(getLocalCommandHints(pathLikeDraft, 'session-1', [])).toEqual([]);
+    expect(autocompleteLocalCommand(pathLikeDraft, 'session-1', [])).toBeUndefined();
+  });
+
   it('lists grouped common built-in model choices with multi-line formatting', async () => {
     const result = await runLocalCommand(createCommandArgs({ prompt: '/model list' }));
 
diff --git a/src/cli/chat/commands/debug-snapshot-command.ts b/src/cli/chat/commands/debug-snapshot-command.ts
index 6df0731..67e11a0 100644
--- a/src/cli/chat/commands/debug-snapshot-command.ts
+++ b/src/cli/chat/commands/debug-snapshot-command.ts
@@ -1,13 +1,13 @@
 import { matchesExactSlashCommand } from '../../../core/commands/slash/parser.js';
+import type { SlashCommandResult } from '../../../core/commands/slash/result-types.js';
 import type { SlashCommandModule } from '../../../core/commands/slash/types.js';
-import type { LocalCommandResult } from '../state/types.js';
 
 export type TuiSlashCommandContext = {
   saveTuiSnapshot?: () => Promise<string> | string;
 };
 
 export function createTuiDebugSnapshotCommandModule(): SlashCommandModule<
-  LocalCommandResult,
+  SlashCommandResult,
   TuiSlashCommandContext
 > {
   return {
diff --git a/src/cli/chat/state/local-commands.ts b/src/cli/chat/state/local-commands.ts
index 791dd44..8a7b742 100644
--- a/src/cli/chat/state/local-commands.ts
+++ b/src/cli/chat/state/local-commands.ts
@@ -1,8 +1,10 @@
-import type { ChatSession, LocalCommandResult } from './types.js';
+import type { ChatSession } from './types.js';
 import type { OpenAiOAuthCredential } from '../../../core/auth/openai-oauth.js';
 import type { ProviderCredentialSource } from '../utils/runtime.js';
+import { autocompleteSlashCommand, filterSlashCommandHints } from '../../../core/commands/slash/autocomplete.js';
 import { createSlashCommandRegistry } from '../../../core/commands/slash/registry.js';
 import { createCoreSlashCommandModules } from '../../../core/commands/slash/modules/core-command-modules.js';
+import type { SlashCommandResult } from '../../../core/commands/slash/result-types.js';
 import { createTuiSlashCommandContext } from '../adapters/slash-command-context.js';
 import { createTuiDebugSnapshotCommandModule } from '../commands/debug-snapshot-command.js';
 
@@ -97,6 +99,10 @@ export function getLocalCommandHints(
   sessions: ChatSession[],
 ): LocalCommandHint[] {
   const trimmed = draft.trim();
+  if (!isLikelyLocalCommand(trimmed)) {
+    return [];
+  }
+
   if (trimmed.startsWith('/session switch ')) {
     const sessionHints = sessions.map((session) => ({
       command: `/session switch ${session.id}`,
@@ -105,8 +111,7 @@ export function getLocalCommandHints(
     return sessionHints.filter((hint) => hint.command.startsWith(trimmed));
   }
 
-  const filtered = HELP_HINTS.filter((hint) => hint.command.startsWith(trimmed) || trimmed === '/');
-  return filtered.length > 0 ? filtered : HELP_HINTS;
+  return filterSlashCommandHints(trimmed, HELP_HINTS);
 }
 
 export function autocompleteLocalCommand(
@@ -114,38 +119,15 @@ export function autocompleteLocalCommand(
   activeSessionId: string,
   sessions: ChatSession[],
 ): string | undefined {
-  const leadingWhitespace = draft.match(/^\s*/)?.[0] ?? '';
   const trimmedStart = draft.trimStart();
   if (!isLikelyLocalCommand(trimmedStart)) {
     return undefined;
   }
 
-  const completionCandidates = Array.from(
-    new Set(
-      getLocalCommandHints(trimmedStart, activeSessionId, sessions)
-        .map((hint) => hintCommandToCompletionCandidate(hint.command))
-        .filter((candidate) => candidate.startsWith(trimmedStart)),
-    ),
-  );
-  if (completionCandidates.length === 0) {
-    return undefined;
-  }
-
-  const sharedPrefix = longestSharedPrefix(completionCandidates);
-  const expandedPrefix =
-    completionCandidates.some((candidate) => candidate.startsWith(`${sharedPrefix} `)) ? `${sharedPrefix} ` : sharedPrefix;
-  if (expandedPrefix.length > trimmedStart.length) {
-    return `${leadingWhitespace}${expandedPrefix}`;
-  }
-
-  if (completionCandidates.length === 1 && completionCandidates[0] !== trimmedStart) {
-    return `${leadingWhitespace}${completionCandidates[0]}`;
-  }
-
-  return undefined;
+  return autocompleteSlashCommand(draft, getLocalCommandHints(trimmedStart, activeSessionId, sessions));
 }
 
-export async function runLocalCommand(args: LocalCommandArgs): Promise<LocalCommandResult> {
+export async function runLocalCommand(args: LocalCommandArgs): Promise<SlashCommandResult> {
   const trimmed = args.prompt.trim();
   if (!isLikelyLocalCommand(trimmed)) {
     return { handled: false };
@@ -168,7 +150,7 @@ export async function runLocalCommand(args: LocalCommandArgs): Promise<LocalComm
   return messageResult(`Unknown command: ${trimmed}. Use /help for available commands.`);
 }
 
-function messageResult(message: string, sessionId?: string): LocalCommandResult {
+function messageResult(message: string, sessionId?: string): SlashCommandResult {
   return {
     handled: true,
     kind: 'message',
@@ -177,35 +159,6 @@ function messageResult(message: string, sessionId?: string): LocalCommandResult
   };
 }
 
-function hintCommandToCompletionCandidate(command: string): string {
-  const placeholderMatch = command.match(/\s(?:<[^>]+>|\[[^\]]+\])/);
-  if (!placeholderMatch || placeholderMatch.index === undefined) {
-    return command;
-  }
-
-  return `${command.slice(0, placeholderMatch.index)} `;
-}
-
-function longestSharedPrefix(values: string[]): string {
-  if (values.length === 0) {
-    return '';
-  }
-
-  let prefix = values[0] ?? '';
-  for (const value of values.slice(1)) {
-    let index = 0;
-    while (index < prefix.length && index < value.length && prefix[index] === value[index]) {
-      index += 1;
-    }
-    prefix = prefix.slice(0, index);
-    if (!prefix) {
-      break;
-    }
-  }
-
-  return prefix;
-}
-
 function capitalizeFirst(value: string): string {
   return value.length > 0 ? `${value[0]!.toUpperCase()}${value.slice(1)}.` : value;
 }
diff --git a/src/cli/chat/state/types.ts b/src/cli/chat/state/types.ts
index 1697a5c..bd609d2 100644
--- a/src/cli/chat/state/types.ts
+++ b/src/cli/chat/state/types.ts
@@ -6,5 +6,7 @@ export type {
   ChatSession,
   PendingApproval,
   ApprovalChoice,
-  LocalCommandResult,
 } from '../../../core/chat/types.js';
+export type {
+  SlashCommandResult,
+} from '../../../core/commands/slash/result-types.js';
diff --git a/src/core/chat/types.ts b/src/core/chat/types.ts
index 1a89d62..6e7de70 100644
--- a/src/core/chat/types.ts
+++ b/src/core/chat/types.ts
@@ -93,9 +93,3 @@ export type PendingApproval = {
 };
 
 export type ApprovalChoice = 'approve' | 'allow_project' | 'deny';
-
-export type LocalCommandResult =
-  | { handled: false }
-  | { handled: true; kind: 'message'; message: string; sessionId?: string }
-  | { handled: true; kind: 'continue'; sessionId?: string; message?: string }
-  | { handled: true; kind: 'execute'; prompt: string; displayText: string; message?: string };
diff --git a/src/core/commands/README.md b/src/core/commands/README.md
index e9431ff..b25a83f 100644
--- a/src/core/commands/README.md
+++ b/src/core/commands/README.md
@@ -1,15 +1,15 @@
 # Commands
 
-The commands domain is the planned home for text-command parsing, registration,
-autocomplete, and cross-host command behavior. It starts as documentation in M0;
-implementation begins with the slash-command milestones.
+The commands domain owns text-command parsing, registration, autocomplete, and
+cross-host command behavior. Host layers compose command modules into their own
+registries and render the command results.
 
 ## Owns
 
 - Generic slash-command parser and registry infrastructure.
 - Command metadata such as syntax, description, aliases, and hints.
 - Cross-host command modules for behavior that is not specific to TUI rendering.
-- Command result types that adapters can render or execute.
+- Slash command result types that adapters can render or execute.
 
 ## Does Not Own
 
@@ -19,9 +19,12 @@ implementation begins with the slash-command milestones.
   credential storage. Commands call those through ports.
 - Turn execution middleware.
 
-## Planned Public Entry Points
+## Current Entry Points
 
-- `slash/types.ts`: command, context, result, and parsed input types.
+- `slash/types.ts`: command metadata, parsed input, hints, and registry-facing
+  generic types.
+- `slash/result-types.ts`: `SlashCommandResult`, the command-domain result
+  contract.
 - `slash/parser.ts`: parse slash command text without treating absolute paths as
   commands.
 - `slash/registry.ts`: register and dispatch command modules.
@@ -48,8 +51,12 @@ implementation begins with the slash-command milestones.
 
 ## Tests
 
-- Planned: `src/__tests__/unit/core/slash-commands.test.ts`
-- Existing behavior lock: `src/__tests__/unit/tui/local-commands.test.ts`
+- Core parser, registry, and autocomplete:
+  `src/__tests__/unit/core/slash-commands.test.ts`
+- Core command modules:
+  `src/__tests__/unit/core/slash-command-modules.test.ts`
+- TUI behavior lock:
+  `src/__tests__/unit/tui/local-commands.test.ts`
 - TUI command integration: `src/__tests__/integration/tui/session-cli.test.ts`
 
 ## Notes For Coding Agents
@@ -58,4 +65,3 @@ implementation begins with the slash-command milestones.
   itself.
 - Prefer command arrays and registries over switchboards.
 - Keep command modules UI-free unless they live under a host-specific folder.
-
diff --git a/src/core/commands/slash/modules/auth/auth-commands.ts b/src/core/commands/slash/modules/auth/auth-commands.ts
index 5094fb9..c71c42b 100644
--- a/src/core/commands/slash/modules/auth/auth-commands.ts
+++ b/src/core/commands/slash/modules/auth/auth-commands.ts
@@ -1,12 +1,13 @@
 import { matchesAnyExactSlashCommand, matchesSlashCommandPrefix } from '../../parser.js';
+import type { SlashCommandResult } from '../../result-types.js';
 import type { SlashCommandModule } from '../../types.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from '../context.js';
+import type { SlashCommandExecutionContext } from '../context.js';
 import { argumentAfterPrefix, formatCommandError, slashMessageResult } from '../results.js';
 import type { LlmProvider } from '../../../../llm/types.js';
 
 const AUTH_PROVIDERS = new Set<LlmProvider>(['openai', 'anthropic', 'google']);
 
-export function createAuthSlashCommandModule(): SlashCommandModule<CoreSlashCommandResult, SlashCommandExecutionContext> {
+export function createAuthSlashCommandModule(): SlashCommandModule<SlashCommandResult, SlashCommandExecutionContext> {
   return {
     id: 'auth',
     hints: [
@@ -45,7 +46,7 @@ export function createAuthSlashCommandModule(): SlashCommandModule<CoreSlashComm
 async function login(
   context: SlashCommandExecutionContext,
   value: string,
-): Promise<CoreSlashCommandResult> {
+): Promise<SlashCommandResult> {
   const provider = parseAuthProvider(value);
   if (!provider) {
     return slashMessageResult('Usage: /auth login <provider>');
@@ -61,7 +62,7 @@ async function login(
 function logout(
   context: SlashCommandExecutionContext,
   value: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   const provider = parseAuthProvider(value);
   if (!provider) {
     return slashMessageResult('Usage: /auth logout <provider>');
diff --git a/src/core/commands/slash/modules/compaction/compaction-commands.ts b/src/core/commands/slash/modules/compaction/compaction-commands.ts
index 93ba8f5..b306e08 100644
--- a/src/core/commands/slash/modules/compaction/compaction-commands.ts
+++ b/src/core/commands/slash/modules/compaction/compaction-commands.ts
@@ -1,9 +1,10 @@
 import { matchesExactSlashCommand } from '../../parser.js';
+import type { SlashCommandResult } from '../../result-types.js';
 import type { SlashCommandModule } from '../../types.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from '../context.js';
+import type { SlashCommandExecutionContext } from '../context.js';
 import { slashMessageResult } from '../results.js';
 
-export function createCompactionSlashCommandModule(): SlashCommandModule<CoreSlashCommandResult, SlashCommandExecutionContext> {
+export function createCompactionSlashCommandModule(): SlashCommandModule<SlashCommandResult, SlashCommandExecutionContext> {
   return {
     id: 'compaction',
     hints: [
diff --git a/src/core/commands/slash/modules/context.ts b/src/core/commands/slash/modules/context.ts
index 251cdf4..0e81bbd 100644
--- a/src/core/commands/slash/modules/context.ts
+++ b/src/core/commands/slash/modules/context.ts
@@ -1,10 +1,11 @@
-import type { ChatSession, LocalCommandResult } from '../../../chat/types.js';
+import type { ChatSession } from '../../../chat/types.js';
 import type { LlmProvider } from '../../../llm/types.js';
 import type { ProviderCredentialSource } from '../../../runtime/api-keys.js';
 import type {
   HeartbeatTask,
   HeartbeatTaskRunRecordEntry,
 } from '../../../runtime/heartbeat-task-store.js';
+import type { SlashCommandResult } from '../result-types.js';
 
 export type SlashCommandExecutionContext = {
   model: {
@@ -42,4 +43,4 @@ export type SlashCommandExecutionContext = {
   };
 };
 
-export type CoreSlashCommandResult = LocalCommandResult;
+export type { SlashCommandResult };
diff --git a/src/core/commands/slash/modules/core-command-modules.ts b/src/core/commands/slash/modules/core-command-modules.ts
index dd358de..0123f22 100644
--- a/src/core/commands/slash/modules/core-command-modules.ts
+++ b/src/core/commands/slash/modules/core-command-modules.ts
@@ -1,5 +1,6 @@
 import type { SlashCommandModule } from '../types.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from './context.js';
+import type { SlashCommandResult } from '../result-types.js';
+import type { SlashCommandExecutionContext } from './context.js';
 import { createAuthSlashCommandModule } from './auth/auth-commands.js';
 import { createCompactionSlashCommandModule } from './compaction/compaction-commands.js';
 import { createDriftSlashCommandModule } from './drift/drift-commands.js';
@@ -8,7 +9,7 @@ import { createModelSlashCommandModule } from './model/model-commands.js';
 import { createSessionSlashCommandModule } from './session/session-commands.js';
 
 export function createCoreSlashCommandModules(): SlashCommandModule<
-  CoreSlashCommandResult,
+  SlashCommandResult,
   SlashCommandExecutionContext
 >[] {
   return [
diff --git a/src/core/commands/slash/modules/drift/drift-commands.ts b/src/core/commands/slash/modules/drift/drift-commands.ts
index e993afc..18df79e 100644
--- a/src/core/commands/slash/modules/drift/drift-commands.ts
+++ b/src/core/commands/slash/modules/drift/drift-commands.ts
@@ -1,9 +1,10 @@
 import { matchesAnyExactSlashCommand, matchesExactSlashCommand } from '../../parser.js';
+import type { SlashCommandResult } from '../../result-types.js';
 import type { SlashCommandModule } from '../../types.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from '../context.js';
+import type { SlashCommandExecutionContext } from '../context.js';
 import { slashMessageResult } from '../results.js';
 
-export function createDriftSlashCommandModule(): SlashCommandModule<CoreSlashCommandResult, SlashCommandExecutionContext> {
+export function createDriftSlashCommandModule(): SlashCommandModule<SlashCommandResult, SlashCommandExecutionContext> {
   return {
     id: 'drift',
     hints: [
diff --git a/src/core/commands/slash/modules/heartbeat/heartbeat-commands.ts b/src/core/commands/slash/modules/heartbeat/heartbeat-commands.ts
index 3ad112f..304c0dd 100644
--- a/src/core/commands/slash/modules/heartbeat/heartbeat-commands.ts
+++ b/src/core/commands/slash/modules/heartbeat/heartbeat-commands.ts
@@ -1,13 +1,14 @@
 import { matchesExactSlashCommand, matchesSlashCommandPrefix } from '../../parser.js';
+import type { SlashCommandResult } from '../../result-types.js';
 import type { SlashCommandModule } from '../../types.js';
 import type {
   HeartbeatTask,
   HeartbeatTaskRunRecordEntry,
 } from '../../../../runtime/heartbeat-task-store.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from '../context.js';
+import type { SlashCommandExecutionContext } from '../context.js';
 import { argumentAfterPrefix, slashMessageResult } from '../results.js';
 
-export function createHeartbeatSlashCommandModule(): SlashCommandModule<CoreSlashCommandResult, SlashCommandExecutionContext> {
+export function createHeartbeatSlashCommandModule(): SlashCommandModule<SlashCommandResult, SlashCommandExecutionContext> {
   return {
     id: 'heartbeat',
     hints: [
@@ -59,7 +60,7 @@ export function createHeartbeatSlashCommandModule(): SlashCommandModule<CoreSlas
 
 export async function listHeartbeatTasksMessage(
   context: Pick<SlashCommandExecutionContext, 'heartbeat'>,
-): Promise<CoreSlashCommandResult> {
+): Promise<SlashCommandResult> {
   const tasks = await context.heartbeat.listTasks();
   if (!tasks.length) {
     return slashMessageResult('No heartbeat tasks found.');
@@ -71,7 +72,7 @@ export async function listHeartbeatTasksMessage(
 export async function listHeartbeatRunsMessage(
   context: Pick<SlashCommandExecutionContext, 'heartbeat'>,
   taskId: string,
-): Promise<CoreSlashCommandResult> {
+): Promise<SlashCommandResult> {
   const trimmedTaskId = taskId.trim();
   const runs = await context.heartbeat.listRunRecords({
     taskId: trimmedTaskId || undefined,
@@ -157,7 +158,7 @@ function matchesRequiredHeartbeatArgument(prefix: string): (input: { raw: string
 async function showHeartbeatTask(
   context: Pick<SlashCommandExecutionContext, 'heartbeat'>,
   value: string,
-): Promise<CoreSlashCommandResult> {
+): Promise<SlashCommandResult> {
   const taskId = value.trim();
   const tasks = await context.heartbeat.listTasks();
   const task = tasks.find((candidate) => candidate.id === taskId);
@@ -167,7 +168,7 @@ async function showHeartbeatTask(
 async function showHeartbeatRun(
   context: Pick<SlashCommandExecutionContext, 'heartbeat'>,
   value: string,
-): Promise<CoreSlashCommandResult> {
+): Promise<SlashCommandResult> {
   const request = parseHeartbeatRunRequest(value);
   const run = await resolveHeartbeatRun(context, request);
   return run ? slashMessageResult(formatHeartbeatRun(run)) : slashMessageResult(`Heartbeat run not found for task ${request.taskId}: ${request.runRef}`);
@@ -176,7 +177,7 @@ async function showHeartbeatRun(
 async function continueHeartbeatRun(
   context: Pick<SlashCommandExecutionContext, 'heartbeat'>,
   value: string,
-): Promise<CoreSlashCommandResult> {
+): Promise<SlashCommandResult> {
   const request = parseHeartbeatRunRequest(value);
   const run = await resolveHeartbeatRun(context, request);
   if (!run) {
diff --git a/src/core/commands/slash/modules/model/model-commands.ts b/src/core/commands/slash/modules/model/model-commands.ts
index 7b9e79b..9887c2c 100644
--- a/src/core/commands/slash/modules/model/model-commands.ts
+++ b/src/core/commands/slash/modules/model/model-commands.ts
@@ -1,6 +1,7 @@
 import { matchesAnyExactSlashCommand, matchesExactSlashCommand, matchesSlashCommandPrefix } from '../../parser.js';
+import type { SlashCommandResult } from '../../result-types.js';
 import type { SlashCommandModule } from '../../types.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from '../context.js';
+import type { SlashCommandExecutionContext } from '../context.js';
 import { argumentAfterPrefix, slashMessageResult } from '../results.js';
 import { COMMON_BUILT_IN_MODELS, formatBuiltInModelGroups } from '../../../../llm/openai-models.js';
 import { credentialModeFromSource, validateModelCredentialCompatibility } from '../../../../llm/model-policy.js';
@@ -9,12 +10,12 @@ import type { LlmProvider } from '../../../../llm/types.js';
 export const MODEL_LIST_MESSAGE = ['Common built-in model choices', '', formatBuiltInModelGroups()].join('\n');
 export const MODEL_SET_HELP_MESSAGE = 'Use /model set <query> to filter models, then use arrows and Enter to choose one.';
 
-const MODEL_SUBCOMMAND_RESULTS = new Map<string, CoreSlashCommandResult>([
+const MODEL_SUBCOMMAND_RESULTS = new Map<string, SlashCommandResult>([
   ['list', slashMessageResult(MODEL_LIST_MESSAGE)],
   ['set', slashMessageResult(MODEL_SET_HELP_MESSAGE)],
 ]);
 
-export function createModelSlashCommandModule(): SlashCommandModule<CoreSlashCommandResult, SlashCommandExecutionContext> {
+export function createModelSlashCommandModule(): SlashCommandModule<SlashCommandResult, SlashCommandExecutionContext> {
   return {
     id: 'model',
     hints: [
@@ -60,7 +61,7 @@ export function createModelSlashCommandModule(): SlashCommandModule<CoreSlashCom
 function switchModel(
   context: SlashCommandExecutionContext,
   value: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   if (!value) {
     return slashMessageResult('Usage: /model <name>');
   }
diff --git a/src/core/commands/slash/modules/results.ts b/src/core/commands/slash/modules/results.ts
index d41f25f..c810219 100644
--- a/src/core/commands/slash/modules/results.ts
+++ b/src/core/commands/slash/modules/results.ts
@@ -1,7 +1,7 @@
 import type { ParsedSlashCommand } from '../types.js';
-import type { CoreSlashCommandResult } from './context.js';
+import type { SlashCommandResult } from '../result-types.js';
 
-export function slashMessageResult(message: string, sessionId?: string): CoreSlashCommandResult {
+export function slashMessageResult(message: string, sessionId?: string): SlashCommandResult {
   return {
     handled: true,
     kind: 'message',
diff --git a/src/core/commands/slash/modules/session/session-commands.ts b/src/core/commands/slash/modules/session/session-commands.ts
index e4463cf..b4f6c1e 100644
--- a/src/core/commands/slash/modules/session/session-commands.ts
+++ b/src/core/commands/slash/modules/session/session-commands.ts
@@ -1,10 +1,11 @@
 import { matchesExactSlashCommand, matchesSlashCommandPrefix } from '../../parser.js';
+import type { SlashCommandResult } from '../../result-types.js';
 import type { SlashCommandModule } from '../../types.js';
 import type { ChatSession } from '../../../../chat/types.js';
-import type { CoreSlashCommandResult, SlashCommandExecutionContext } from '../context.js';
+import type { SlashCommandExecutionContext } from '../context.js';
 import { argumentAfterPrefix, slashMessageResult } from '../results.js';
 
-export function createSessionSlashCommandModule(): SlashCommandModule<CoreSlashCommandResult, SlashCommandExecutionContext> {
+export function createSessionSlashCommandModule(): SlashCommandModule<SlashCommandResult, SlashCommandExecutionContext> {
   return {
     id: 'session',
     hints: [
@@ -116,7 +117,7 @@ export function resolveSessionReference(args: {
 function createSession(
   context: SlashCommandExecutionContext,
   name: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   const session = context.session.create(name || undefined);
   return slashMessageResult(`Created and switched to ${session.id} (${session.name}).`, session.id);
 }
@@ -124,7 +125,7 @@ function createSession(
 function switchSession(
   context: SlashCommandExecutionContext,
   value: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   const session = findSession(context, value);
   if (!session) {
     return slashMessageResult(`Unknown session: ${value}. Use /session list to inspect available sessions.`);
@@ -137,7 +138,7 @@ function switchSession(
 function continueSession(
   context: SlashCommandExecutionContext,
   value: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   const session = findSession(context, value);
   if (!session) {
     return slashMessageResult(`Unknown session: ${value}.\nUse /session list to inspect available sessions.`);
@@ -154,7 +155,7 @@ function continueSession(
 function renameSession(
   context: SlashCommandExecutionContext,
   name: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   if (!name) {
     return slashMessageResult('Usage: /session rename <name>');
   }
@@ -166,7 +167,7 @@ function renameSession(
 function closeSession(
   context: SlashCommandExecutionContext,
   value: string,
-): CoreSlashCommandResult {
+): SlashCommandResult {
   const session = findSession(context, value);
   if (!session) {
     return slashMessageResult(`Unknown session: ${value}.\nUse /session list to inspect available sessions.`);
diff --git a/src/core/commands/slash/result-types.ts b/src/core/commands/slash/result-types.ts
new file mode 100644
index 0000000..839fa8d
--- /dev/null
+++ b/src/core/commands/slash/result-types.ts
@@ -0,0 +1,5 @@
+export type SlashCommandResult =
+  | { handled: false }
+  | { handled: true; kind: 'message'; message: string; sessionId?: string }
+  | { handled: true; kind: 'continue'; sessionId?: string; message?: string }
+  | { handled: true; kind: 'execute'; prompt: string; displayText: string; message?: string };