Linux x86_64 | Node v26.12.1 | systemd 255 (255.4-1ubuntu8.18)
Commit 97cfc07759fed2a67edef22de4370ed74ff40030
Real bundled CLI; isolated temporary user manager; synthetic executable fixture.
Fixture: --version prints t3 v0.1.9; otherwise runs sleep infinity.
No application database or provider used.

CASE plain | home basename "plain"
$ t3 service install --base-dir "/proof/20261113T043928/before/plain"
Service installed · t3@0.1.9
Log: /proof/20261113T043928/before/plain/userdata/logs/boot-service.log
Run `t3 up` to choose how your other devices reach it.
CLI exit: 0
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service

Verify exit: 0
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=loaded
ActiveState=active
SubState=running

CASE space | home basename "T3 Data"
$ t3 service install --base-dir "/proof/20261113T043928/before/T3 Data"
Service installed · t3@0.1.9
Log: /proof/20261113T043928/before/T3 Data/userdata/logs/boot-service.log
Run `t3 up` to choose how your other devices reach it.
CLI exit: 0
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service

Verify exit: 0
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=loaded
ActiveState=active
SubState=running

CASE percent | home basename "100%h"
$ t3 service install --base-dir "/proof/20261113T043928/before/100%h"
Service installed · t3@0.1.9
Log: /proof/20261113T043928/before/100%h/userdata/logs/boot-service.log
Run `t3 up` to choose how your other devices reach it.
CLI exit: 0
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service

Verify exit: 0
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=loaded
ActiveState=active
SubState=running

CASE dollar | home basename "${UNSET}"
$ t3 service install --base-dir "/proof/20261113T043928/before/${UNSET}"
Service installed · t3@0.1.9
Log: /proof/20261113T043928/before/${UNSET}/userdata/logs/boot-service.log
Run `t3 up` to choose how your other devices reach it.
CLI exit: 0
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service

Verify exit: 0
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=loaded
ActiveState=active
SubState=running

CASE double quote | home basename "T3 \"Data\""
$ t3 service install --base-dir "/proof/20261113T043928/before/T3 \"Data\""
[04:39:32.209] ERROR (#2): BootServiceCommandError: Background setup failed while starting the service (exit code 1).
    at file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43530:64
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11071:166
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11831:128
    at cloud.boot_service.run_step (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43541:33)
    at cloud.boot_service.run_step (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43522:18)
    at cloud.boot_service.install (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7960:30)
    at cloud.boot_service.install (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43615:18)
    at cli.service.reconcile (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8015:24)
    at cli.service.reconcile (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7940:26)
    at cli.service.run (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8014:229)
    at cli.service.run (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8005:27)
CLI exit: 1
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service
/proof/service-user/.config/systemd/user/t3code.service:11: Executable name contains special characters: /proof/20261113T043928/before/T3 "Data"/runtime/versions/0.1.9/t3
t3code.service: Unit configuration has fatal error, unit will not be started.
Unit t3code.service has a bad unit file setting.
Verify exit: 1
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=bad-setting
ActiveState=inactive
SubState=dead

CASE single quote | home basename "it's"
$ t3 service install --base-dir "/proof/20261113T043928/before/it's"
[04:39:32.985] ERROR (#2): BootServiceCommandError: Background setup failed while starting the service (exit code 1).
    at file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43530:64
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11071:166
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11831:128
    at cloud.boot_service.run_step (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43541:33)
    at cloud.boot_service.run_step (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43522:18)
    at cloud.boot_service.install (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7960:30)
    at cloud.boot_service.install (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43615:18)
    at cli.service.reconcile (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8015:24)
    at cli.service.reconcile (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7940:26)
    at cli.service.run (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8014:229)
    at cli.service.run (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8005:27)
CLI exit: 1
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service
/proof/service-user/.config/systemd/user/t3code.service:11: Executable name contains special characters: /proof/20261113T043928/before/it's/runtime/versions/0.1.9/t3
t3code.service: Unit configuration has fatal error, unit will not be started.
Unit t3code.service has a bad unit file setting.
Verify exit: 1
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=bad-setting
ActiveState=inactive
SubState=dead

CASE backslash | home basename "T3\\Data"
$ t3 service install --base-dir "/proof/20261113T043928/before/T3\\Data"
[04:39:33.693] ERROR (#2): BootServiceCommandError: Background setup failed while starting the service (exit code 1).
    at file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43530:64
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11071:166
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11831:128
    at cloud.boot_service.run_step (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43541:33)
    at cloud.boot_service.run_step (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43522:18)
    at cloud.boot_service.install (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7960:30)
    at cloud.boot_service.install (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43615:18)
    at cli.service.reconcile (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8015:24)
    at cli.service.reconcile (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7940:26)
    at cli.service.run (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8014:229)
    at cli.service.run (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8005:27)
CLI exit: 1
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service
/proof/service-user/.config/systemd/user/t3code.service:11: Executable name contains special characters: /proof/20261113T043928/before/T3\Data/runtime/versions/0.1.9/t3
t3code.service: Unit configuration has fatal error, unit will not be started.
Unit t3code.service has a bad unit file setting.
Verify exit: 1
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=bad-setting
ActiveState=inactive
SubState=dead

CASE newline | home basename "T3\nData"
$ t3 service install --base-dir "/proof/20261113T043928/before/T3\nData"
[04:39:34.419] ERROR (#2): BootServiceCommandError: Background setup failed while starting the service (exit code 1).
    at file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43530:64
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11071:166
    at file:///checkout/base/apps/server/dist/Schema-DXsMz4_8.mjs:11831:128
    at cloud.boot_service.run_step (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43541:33)
    at cloud.boot_service.run_step (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43522:18)
    at cloud.boot_service.install (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7960:30)
    at cloud.boot_service.install (definition) (file:///checkout/base/apps/server/dist/ManagedEndpointRuntime-BpFGNri9.mjs:43615:18)
    at cli.service.reconcile (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8015:24)
    at cli.service.reconcile (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:7940:26)
    at cli.service.run (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8014:229)
    at cli.service.run (definition) (file:///checkout/base/apps/server/dist/binCli-Ck8ZHRzB.mjs:8005:27)
CLI exit: 1
Unit file written: true
$ systemd-analyze verify --user --man=no t3code.service
/proof/service-user/.config/systemd/user/t3code.service:9: Invalid syntax, ignoring: T3CODE_HOME="/proof/20261113T043928/before/T3
/proof/service-user/.config/systemd/user/t3code.service:10: Missing '=', ignoring line.
/proof/service-user/.config/systemd/user/t3code.service:12: Unbalanced quoting, ignoring: ""/proof/20261113T043928/before/T3"
/proof/service-user/.config/systemd/user/t3code.service:13: Missing '=', ignoring line.
/proof/service-user/.config/systemd/user/t3code.service:24: Missing '=', ignoring line.
/proof/service-user/.config/systemd/user/t3code.service:26: Missing '=', ignoring line.
t3code.service: Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.
Unit t3code.service has a bad unit file setting.
Verify exit: 1
$ systemctl --user show t3code.service --property=LoadState,ActiveState,SubState
LoadState=bad-setting
ActiveState=inactive
SubState=dead