diff --git a/package-lock.json b/package-lock.json
index 9405a71..05258da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@autor3search/javascript",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@autor3search/javascript",
-      "version": "0.2.2",
+      "version": "0.2.3",
       "license": "MIT",
       "dependencies": {
         "@babel/parser": "^7.25.0",
diff --git a/package.json b/package.json
index 2a5354d..2c2136a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@autor3search/javascript",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "description": "Autonomous AI-driven performance optimization for any JavaScript repository",
   "type": "module",
   "license": "MIT",
diff --git a/src/cli/cmd-baseline.js b/src/cli/cmd-baseline.js
index 0047ccb..8155f50 100644
--- a/src/cli/cmd-baseline.js
+++ b/src/cli/cmd-baseline.js
@@ -28,13 +28,14 @@ import {
 import { expandSingleDashFlags, loadRepoConfig, resolveRepo } from './context.js'
 
 export async function runBaseline(args, io) {
+  const options = {
+    C: { type: 'string', default: '.' },
+    tag: { type: 'string', default: defaultTag() },
+    force: { type: 'boolean', default: false },
+  }
   const { values } = parseArgs({
-    args: expandSingleDashFlags(args, ['tag']),
-    options: {
-      C: { type: 'string', default: '.' },
-      tag: { type: 'string', default: defaultTag() },
-      force: { type: 'boolean', default: false },
-    },
+    args: expandSingleDashFlags(args, options),
+    options,
     allowPositionals: false,
   })
 
diff --git a/src/cli/cmd-eval.js b/src/cli/cmd-eval.js
index f9dedd1..88f94aa 100644
--- a/src/cli/cmd-eval.js
+++ b/src/cli/cmd-eval.js
@@ -29,14 +29,15 @@ const FORCE_POLL_MS = 500
  * @returns {Promise<number>}
  */
 export async function runEval(args, io) {
+  const options = {
+    C: { type: 'string', default: '.' },
+    json: { type: 'boolean', default: false },
+    desc: { type: 'string', default: '' },
+    'no-log': { type: 'boolean', default: false },
+  }
   const { values } = parseArgs({
-    args: expandSingleDashFlags(args, ['desc']),
-    options: {
-      C: { type: 'string', default: '.' },
-      json: { type: 'boolean', default: false },
-      desc: { type: 'string', default: '' },
-      'no-log': { type: 'boolean', default: false },
-    },
+    args: expandSingleDashFlags(args, options),
+    options,
     allowPositionals: false,
   })
 
diff --git a/src/cli/cmd-status.js b/src/cli/cmd-status.js
index bd076b3..2fa0571 100644
--- a/src/cli/cmd-status.js
+++ b/src/cli/cmd-status.js
@@ -17,9 +17,10 @@ import { expandSingleDashFlags, resolveRun } from './context.js'
  * @returns {Promise<number>}
  */
 export async function runStatus(args, io) {
+  const options = { C: { type: 'string', default: '.' }, tag: { type: 'string' } }
   const { values } = parseArgs({
-    args: expandSingleDashFlags(args, ['tag']),
-    options: { C: { type: 'string', default: '.' }, tag: { type: 'string' } },
+    args: expandSingleDashFlags(args, options),
+    options,
     allowPositionals: false,
   })
 
diff --git a/src/cli/cmd-stop.js b/src/cli/cmd-stop.js
index a4ec500..f741588 100644
--- a/src/cli/cmd-stop.js
+++ b/src/cli/cmd-stop.js
@@ -23,14 +23,15 @@ import { expandSingleDashFlags, resolveRun } from './context.js'
  * @returns {Promise<number>}
  */
 export async function runStop(args, io) {
+  const options = {
+    C: { type: 'string', default: '.' },
+    tag: { type: 'string' },
+    clear: { type: 'boolean', default: false },
+    force: { type: 'boolean', default: false },
+  }
   const { values } = parseArgs({
-    args: expandSingleDashFlags(args, ['tag']),
-    options: {
-      C: { type: 'string', default: '.' },
-      tag: { type: 'string' },
-      clear: { type: 'boolean', default: false },
-      force: { type: 'boolean', default: false },
-    },
+    args: expandSingleDashFlags(args, options),
+    options,
     allowPositionals: false,
   })
 
diff --git a/src/cli/context.js b/src/cli/context.js
index c92b0f5..3b7ff5e 100644
--- a/src/cli/context.js
+++ b/src/cli/context.js
@@ -24,20 +24,37 @@ import { join } from 'node:path'
  * Only an exact whole-token match is rewritten, so a VALUE that happens to
  * look like a flag (`-desc "-tag is confusing"`) is left alone.
  *
+ * The parseArgs OPTIONS are the input, not a list of names, and that is
+ * load-bearing. A hand-kept list is free to fall out of step with the
+ * declaration beside it, and did: `stop` accepted `-tag` but not the `-force`
+ * the README documents, so `stop -force` failed with "Unknown option '-f'"
+ * until this was derived instead. Deriving it means a flag cannot be
+ * documented, declared, and still unparseable.
+ *
+ * Whether a flag consumes the token after it comes from its declared `type`.
+ * A boolean takes no value, so the next token is another flag and must still
+ * be expanded — skipping it is what made `-force -tag t` die on "Unknown
+ * option '-t'". Single-character names are left alone because parseArgs
+ * already accepts them in single-dash form; `-C` must stay `-C`.
+ *
  * @param {string[]} args
- * @param {string[]} names long option names to accept in single-dash form
+ * @param {Record<string, {type: string}>} options the same parseArgs options the caller parses with
  * @returns {string[]}
  */
-export function expandSingleDashFlags(args, names) {
-  const single = new Set(names.map((name) => `-${name}`))
+export function expandSingleDashFlags(args, options) {
+  const expandable = new Map(
+    Object.entries(options)
+      .filter(([name]) => name.length > 1)
+      .map(([name, opt]) => [`-${name}`, opt.type !== 'boolean']),
+  )
   let expectingValue = false
   return args.map((token) => {
     if (expectingValue) {
       expectingValue = false
       return token
     }
-    if (single.has(token)) {
-      expectingValue = true
+    if (expandable.has(token)) {
+      expectingValue = expandable.get(token)
       return `--${token.slice(1)}`
     }
     return token
diff --git a/test/cli/context.test.js b/test/cli/context.test.js
index c9f9715..6fb3900 100644
--- a/test/cli/context.test.js
+++ b/test/cli/context.test.js
@@ -84,20 +84,48 @@ describe('loadRepoConfig', () => {
 })
 
 describe('expandSingleDashFlags', () => {
+  // The real `stop` declaration: one string option, two booleans, and the
+  // single-character -C. Passing the parseArgs options themselves is the
+  // point — a hand-kept list of names is what let -force go unexpanded.
+  const STOP_OPTIONS = {
+    C: { type: 'string' },
+    tag: { type: 'string' },
+    clear: { type: 'boolean' },
+    force: { type: 'boolean' },
+  }
+
   it('rewrites a documented single-dash flag into the form parseArgs accepts', () => {
-    expect(expandSingleDashFlags(['-tag', 'sep7'], ['tag'])).toEqual(['--tag', 'sep7'])
+    expect(expandSingleDashFlags(['-tag', 'sep7'], STOP_OPTIONS)).toEqual(['--tag', 'sep7'])
   })
 
   it('leaves single-character flags and long forms alone', () => {
-    expect(expandSingleDashFlags(['-C', '/tmp', '--tag', 'x'], ['tag'])).toEqual(['-C', '/tmp', '--tag', 'x'])
+    expect(expandSingleDashFlags(['-C', '/tmp', '--tag', 'x'], STOP_OPTIONS)).toEqual(['-C', '/tmp', '--tag', 'x'])
   })
 
   it('does not rewrite a VALUE that looks like a flag', () => {
     // `-desc "-tag is confusing"` must keep its value verbatim.
-    expect(expandSingleDashFlags(['-desc', '-tag'], ['desc', 'tag'])).toEqual(['--desc', '-tag'])
+    const options = { desc: { type: 'string' }, tag: { type: 'string' } }
+    expect(expandSingleDashFlags(['-desc', '-tag'], options)).toEqual(['--desc', '-tag'])
   })
 
   it('leaves an unrelated token untouched', () => {
-    expect(expandSingleDashFlags(['-nope', 'x'], ['tag'])).toEqual(['-nope', 'x'])
+    expect(expandSingleDashFlags(['-nope', 'x'], STOP_OPTIONS)).toEqual(['-nope', 'x'])
+  })
+
+  it('rewrites a single-dash BOOLEAN flag, which README documents for stop', () => {
+    expect(expandSingleDashFlags(['-force'], STOP_OPTIONS)).toEqual(['--force'])
+    expect(expandSingleDashFlags(['-clear'], STOP_OPTIONS)).toEqual(['--clear'])
+  })
+
+  it('does not swallow the token after a boolean flag', () => {
+    // A boolean takes no value, so the token after it is another flag and must
+    // still be expanded. Treating it as a value is what made the first attempt
+    // at this fix wrong: `-force -tag t` became `['--force', '-tag', 't']` and
+    // died on "Unknown option '-t'" — one bug traded for a subtler one.
+    expect(expandSingleDashFlags(['-force', '-tag', 't'], STOP_OPTIONS)).toEqual(['--force', '--tag', 't'])
+  })
+
+  it('still treats a string option as taking a value, in either order', () => {
+    expect(expandSingleDashFlags(['-tag', 't', '-force'], STOP_OPTIONS)).toEqual(['--tag', 't', '--force'])
   })
 })
diff --git a/test/cli/stop.test.js b/test/cli/stop.test.js
index 60840e6..6859973 100644
--- a/test/cli/stop.test.js
+++ b/test/cli/stop.test.js
@@ -57,6 +57,28 @@ describe('stop', () => {
     expect(await stopRequested(await stateDir(dir, 't'))).toBe(true)
   })
 
+  it('accepts the single-dash -force the README documents', async () => {
+    // README's agent prompt tells the human "I may run `stop -force` myself".
+    // It used to fail with "Unknown option '-f'": parseArgs only takes a single
+    // dash for a single-character name, and -force was never expanded. The
+    // unit test in context.test.js covers the expansion; this covers the
+    // spelling a human actually types.
+    const dir = await ready()
+    const { code } = await runCli(['stop', '-C', dir, '-force'])
+    expect(code).toBe(0)
+    expect(await forceRequested(await stateDir(dir, 't'))).toBe(true)
+  })
+
+  it('accepts -force and -tag together, in either order', async () => {
+    // A boolean consumes no value, so the flag after it must still be expanded.
+    const dir = await ready()
+    expect((await runCli(['stop', '-C', dir, '-force', '-tag', 't'])).code).toBe(0)
+    expect(await forceRequested(await stateDir(dir, 't'))).toBe(true)
+    await runCli(['stop', '-C', dir, '--clear'])
+    expect((await runCli(['stop', '-C', dir, '-tag', 't', '-force'])).code).toBe(0)
+    expect(await forceRequested(await stateDir(dir, 't'))).toBe(true)
+  })
+
   it('warns a later plain stop that a forced stop from earlier is still pending', async () => {
     // stop --force issued while nothing was running leaves the marker sticky
     // — it aborts the NEXT eval, not this session's. A human who later runs