📊 Mutation testing — weekly baseline

[github-actions]

Score: 63.9% (↓ -1.5 vs prior)

Per-shard breakdown

Shard	Score	Killed	Survived	No cov	Timeout	Errors	Total
db	10.5%	55	412	52	4	412	935
hardware-lib	67.6%	1518	538	181	7	893	3161
homekit	62.1%	282	163	9	0	201	681
hooks	73.5%	866	289	23	1	497	1702
server	59.1%	1393	596	368	2	1679	5082
services-scheduler	73.0%	548	184	16	3	251	1004
streaming	75.5%	870	210	61	12	392	1559

• HTML reports: attached as mutation-report-<shard> artifacts on run 28284145339.
• Hit list artifact: mutation-hitlist on the same run.
• Last updated: 2026-06-27T09:55:43.143Z (commit 9a2418b, trigger: schedule).

This issue is updated automatically by .github/workflows/mutation.yml on each scheduled / manual mutation run. Do not edit the body — it will be overwritten. Comment freely to track work on surviving mutants.

---

Mutation testing — hit list

Score: 63.9% · Total mutants: 14124

Status	Count
Killed	5532
Survived	2392
NoCoverage	710
Timeout	29
CompileError	4324
RuntimeError	1
Ignored	1136

Surviving mutants by file (82 files, top 50 mutants shown)

For each entry below: the mutator type tells you what Stryker changed, the snippet shows where, and "expected test" is the most likely location to add a killing assertion. A killing test must fail when the mutation is applied.

src/db/schema.ts — 194 surviving

Expected test file: src/db/tests/schema.test.ts

StringLiteral at line 8

     7 | 
>    8 | export const deviceSettings = sqliteTable('device_settings', {
     9 |   id: integer('id').primaryKey().$defaultFn(() => 1), // Singleton

+ (mutation): ""

StringLiteral at line 9

     8 | export const deviceSettings = sqliteTable('device_settings', {
>    9 |   id: integer('id').primaryKey().$defaultFn(() => 1), // Singleton
    10 |   timezone: text('timezone').notNull().default('America/Los_Angeles'),

+ (mutation): ""

StringLiteral at line 10

     9 |   id: integer('id').primaryKey().$defaultFn(() => 1), // Singleton
>   10 |   timezone: text('timezone').notNull().default('America/Los_Angeles'),
    11 |   temperatureUnit: text('temperature_unit', { enum: ['F', 'C'] })

+ (mutation): ""

StringLiteral at line 10

     9 |   id: integer('id').primaryKey().$defaultFn(() => 1), // Singleton
>   10 |   timezone: text('timezone').notNull().default('America/Los_Angeles'),
    11 |   temperatureUnit: text('temperature_unit', { enum: ['F', 'C'] })

+ (mutation): ""

StringLiteral at line 11

    10 |   timezone: text('timezone').notNull().default('America/Los_Angeles'),
>   11 |   temperatureUnit: text('temperature_unit', { enum: ['F', 'C'] })
    12 |     .notNull()

+ (mutation): ""

StringLiteral at line 14

    13 |     .default('F'),
>   14 |   rebootDaily: integer('reboot_daily', { mode: 'boolean' })
    15 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 16

    15 |     .notNull()
>   16 |     .default(false),
    17 |   rebootTime: text('reboot_time').default('03:00'), // HH:mm format

+ (mutation): true

StringLiteral at line 17

    16 |     .default(false),
>   17 |   rebootTime: text('reboot_time').default('03:00'), // HH:mm format
    18 |   primePodDaily: integer('prime_pod_daily', { mode: 'boolean' })

+ (mutation): ""

StringLiteral at line 17

    16 |     .default(false),
>   17 |   rebootTime: text('reboot_time').default('03:00'), // HH:mm format
    18 |   primePodDaily: integer('prime_pod_daily', { mode: 'boolean' })

+ (mutation): ""

StringLiteral at line 18

    17 |   rebootTime: text('reboot_time').default('03:00'), // HH:mm format
>   18 |   primePodDaily: integer('prime_pod_daily', { mode: 'boolean' })
    19 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 20

    19 |     .notNull()
>   20 |     .default(false),
    21 |   primePodTime: text('prime_pod_time').default('14:00'), // HH:mm format

+ (mutation): true

StringLiteral at line 21

    20 |     .default(false),
>   21 |   primePodTime: text('prime_pod_time').default('14:00'), // HH:mm format
    22 |   ledNightModeEnabled: integer('led_night_mode_enabled', { mode: 'boolean' })

+ (mutation): ""

StringLiteral at line 21

    20 |     .default(false),
>   21 |   primePodTime: text('prime_pod_time').default('14:00'), // HH:mm format
    22 |   ledNightModeEnabled: integer('led_night_mode_enabled', { mode: 'boolean' })

+ (mutation): ""

StringLiteral at line 22

    21 |   primePodTime: text('prime_pod_time').default('14:00'), // HH:mm format
>   22 |   ledNightModeEnabled: integer('led_night_mode_enabled', { mode: 'boolean' })
    23 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 24

    23 |     .notNull()
>   24 |     .default(false),
    25 |   ledDayBrightness: integer('led_day_brightness').notNull().default(100), // 0-100

+ (mutation): true

StringLiteral at line 26

    25 |   ledDayBrightness: integer('led_day_brightness').notNull().default(100), // 0-100
>   26 |   ledNightBrightness: integer('led_night_brightness').notNull().default(0), // 0-100
    27 |   ledNightStartTime: text('led_night_start_time').default('22:00'), // HH:mm format

+ (mutation): ""

StringLiteral at line 25

    24 |     .default(false),
>   25 |   ledDayBrightness: integer('led_day_brightness').notNull().default(100), // 0-100
    26 |   ledNightBrightness: integer('led_night_brightness').notNull().default(0), // 0-100

+ (mutation): ""

StringLiteral at line 27

    26 |   ledNightBrightness: integer('led_night_brightness').notNull().default(0), // 0-100
>   27 |   ledNightStartTime: text('led_night_start_time').default('22:00'), // HH:mm format
    28 |   ledNightEndTime: text('led_night_end_time').default('07:00'), // HH:mm format

+ (mutation): ""

StringLiteral at line 27

    26 |   ledNightBrightness: integer('led_night_brightness').notNull().default(0), // 0-100
>   27 |   ledNightStartTime: text('led_night_start_time').default('22:00'), // HH:mm format
    28 |   ledNightEndTime: text('led_night_end_time').default('07:00'), // HH:mm format

+ (mutation): ""

StringLiteral at line 28

    27 |   ledNightStartTime: text('led_night_start_time').default('22:00'), // HH:mm format
>   28 |   ledNightEndTime: text('led_night_end_time').default('07:00'), // HH:mm format
    29 |   // Global wall-clock safety cap: if a side has been powered for this many

+ (mutation): ""

StringLiteral at line 28

    27 |   ledNightStartTime: text('led_night_start_time').default('22:00'), // HH:mm format
>   28 |   ledNightEndTime: text('led_night_end_time').default('07:00'), // HH:mm format
    29 |   // Global wall-clock safety cap: if a side has been powered for this many

+ (mutation): ""

StringLiteral at line 37

    36 |   // middleware to gate a hashed-credential round-trip yet.
>   37 |   mqttEnabled: integer('mqtt_enabled', { mode: 'boolean' }),
    38 |   mqttUrl: text('mqtt_url'),

+ (mutation): ""

StringLiteral at line 32

    31 |   // off. NULL = disabled. Independent of per-side bed-exit auto-off.
>   32 |   globalMaxOnHours: integer('global_max_on_hours'),
    33 |   // MQTT bridge configuration. NULL on every field falls back to the

+ (mutation): ""

StringLiteral at line 38

    37 |   mqttEnabled: integer('mqtt_enabled', { mode: 'boolean' }),
>   38 |   mqttUrl: text('mqtt_url'),
    39 |   mqttUsername: text('mqtt_username'),

+ (mutation): ""

StringLiteral at line 39

    38 |   mqttUrl: text('mqtt_url'),
>   39 |   mqttUsername: text('mqtt_username'),
    40 |   mqttPassword: text('mqtt_password'),

+ (mutation): ""

StringLiteral at line 40

    39 |   mqttUsername: text('mqtt_username'),
>   40 |   mqttPassword: text('mqtt_password'),
    41 |   mqttTopicPrefix: text('mqtt_topic_prefix'),

+ (mutation): ""

StringLiteral at line 41

    40 |   mqttPassword: text('mqtt_password'),
>   41 |   mqttTopicPrefix: text('mqtt_topic_prefix'),
    42 |   mqttHaDiscovery: integer('mqtt_ha_discovery', { mode: 'boolean' }),

+ (mutation): ""

StringLiteral at line 42

    41 |   mqttTopicPrefix: text('mqtt_topic_prefix'),
>   42 |   mqttHaDiscovery: integer('mqtt_ha_discovery', { mode: 'boolean' }),
    43 |   mqttTlsEnabled: integer('mqtt_tls_enabled', { mode: 'boolean' }),

+ (mutation): ""

StringLiteral at line 43

    42 |   mqttHaDiscovery: integer('mqtt_ha_discovery', { mode: 'boolean' }),
>   43 |   mqttTlsEnabled: integer('mqtt_tls_enabled', { mode: 'boolean' }),
    44 |   // When true, accept self-signed broker certs (sets rejectUnauthorized:false).

+ (mutation): ""

StringLiteral at line 47

    46 |   // per ADR 0019 — tlsEnabled alone keeps strict cert verification.
>   47 |   mqttTlsInsecure: integer('mqtt_tls_insecure', { mode: 'boolean' }),
    48 |   // HomeKit bridge is opt-in. When true, instrumentation publishes the

+ (mutation): ""

StringLiteral at line 50

    49 |   // hap-nodejs bridge with HeaterCooler/OccupancySensor/Switch accessories.
>   50 |   homekitEnabled: integer('homekit_enabled', { mode: 'boolean' })
    51 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 52

    51 |     .notNull()
>   52 |     .default(false),
    53 |   // Pump-stall safety guard (ADR 0022): a side whose pump RPM stays under the

+ (mutation): true

StringLiteral at line 58

    57 |   // on missing data. Auto-recovery is separately opt-in.
>   58 |   pumpStallProtectionEnabled: integer('pump_stall_protection_enabled', { mode: 'boolean' })
    59 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 60

    59 |     .notNull()
>   60 |     .default(false),
    61 |   pumpStallRpmThreshold: integer('pump_stall_rpm_threshold').notNull().default(500),

+ (mutation): true

StringLiteral at line 62

    61 |   pumpStallRpmThreshold: integer('pump_stall_rpm_threshold').notNull().default(500),
>   62 |   pumpStallDwellSamples: integer('pump_stall_dwell_samples').notNull().default(2),
    63 |   pumpStallAutoRecoveryEnabled: integer('pump_stall_auto_recovery_enabled', { mode: 'boolean' })

+ (mutation): ""

StringLiteral at line 61

    60 |     .default(false),
>   61 |   pumpStallRpmThreshold: integer('pump_stall_rpm_threshold').notNull().default(500),
    62 |   pumpStallDwellSamples: integer('pump_stall_dwell_samples').notNull().default(2),

+ (mutation): ""

StringLiteral at line 63

    62 |   pumpStallDwellSamples: integer('pump_stall_dwell_samples').notNull().default(2),
>   63 |   pumpStallAutoRecoveryEnabled: integer('pump_stall_auto_recovery_enabled', { mode: 'boolean' })
    64 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 65

    64 |     .notNull()
>   65 |     .default(false),
    66 |   pumpStallRecoveryRpm: integer('pump_stall_recovery_rpm').notNull().default(1500),

+ (mutation): true

StringLiteral at line 66

    65 |     .default(false),
>   66 |   pumpStallRecoveryRpm: integer('pump_stall_recovery_rpm').notNull().default(1500),
    67 |   pumpStallRecoverySamples: integer('pump_stall_recovery_samples').notNull().default(3),

+ (mutation): ""

StringLiteral at line 67

    66 |   pumpStallRecoveryRpm: integer('pump_stall_recovery_rpm').notNull().default(1500),
>   67 |   pumpStallRecoverySamples: integer('pump_stall_recovery_samples').notNull().default(3),
    68 |   // Autopilot global kill-switch. When false, the AutomationEngine evaluates

+ (mutation): ""

StringLiteral at line 72

    71 |   // so the kill-switch survives reboot.
>   72 |   autopilotEnabled: integer('autopilot_enabled', { mode: 'boolean' })
    73 |     .notNull()

+ (mutation): ""

BooleanLiteral at line 74

    73 |     .notNull()
>   74 |     .default(true),
    75 |   createdAt: integer('created_at', { mode: 'timestamp' })

+ (mutation): false

StringLiteral at line 75

    74 |     .default(true),
>   75 |   createdAt: integer('created_at', { mode: 'timestamp' })
    76 |     .notNull()

+ (mutation): ""

StringLiteral at line 78

    77 |     .default(sql`(unixepoch())`),
>   78 |   updatedAt: integer('updated_at', { mode: 'timestamp' })
    79 |     .notNull()

+ (mutation): ""

StringLiteral at line 77

    76 |     .notNull()
>   77 |     .default(sql`(unixepoch())`),
    78 |   updatedAt: integer('updated_at', { mode: 'timestamp' })

+ (mutation): ``

StringLiteral at line 80

    79 |     .notNull()
>   80 |     .default(sql`(unixepoch())`),
    81 | })

+ (mutation): ``

StringLiteral at line 83

    82 | 
>   83 | export const sideSettings = sqliteTable('side_settings', {
    84 |   side: text('side', { enum: ['left', 'right'] }).primaryKey(),

+ (mutation): ""

StringLiteral at line 84

    83 | export const sideSettings = sqliteTable('side_settings', {
>   84 |   side: text('side', { enum: ['left', 'right'] }).primaryKey(),
    85 |   name: text('name').notNull(), // Must be provided explicitly during insert

+ (mutation): ""

StringLiteral at line 85

    84 |   side: text('side', { enum: ['left', 'right'] }).primaryKey(),
>   85 |   name: text('name').notNull(), // Must be provided explicitly during insert
    86 |   awayMode: integer('away_mode', { mode: 'boolean' }).notNull().default(false),

+ (mutation): ""

StringLiteral at line 86

    85 |   name: text('name').notNull(), // Must be provided explicitly during insert
>   86 |   awayMode: integer('away_mode', { mode: 'boolean' }).notNull().default(false),
    87 |   alwaysOn: integer('always_on', { mode: 'boolean' }).notNull().default(false),

+ (mutation): ""

…and 2342 more surviving mutants not shown. See the HTML report for the full list.

[ng]

Working the top surviving file, src/streaming/mqttBridge.ts (220 surviving — largest single contributor).

PR #635 adds payload-content mutation coverage (no source changes). Scoped Stryker on this file: 220 → 32 surviving, file score 61.6% → 92.18%.

The remaining 32 are equivalent mutants — slugify's own empty-string fallback (L150), JSON.stringify dropping undefined (L302), JSON.parse whitespace-tolerance (L604/605), safePublish's connected-guard masking early-returns (L446/790/818), setTimeout timing values (L693/821), Math.random() clientId entropy (L676/725), shutdown guard internals (L796), and info-level console.log strings (L711/749/760/797).