Bind the Filesystem and Clock service reads to the service that answers them

dag/extdeps/provisioning/ubuntu_seeded_install_media_remaster.dag

@@ -4,7 +4,7 @@ import gunbc.output_policy { OutcomeIsData }
 import extdeps.external_authority { ExternalAuthority }
 import extdeps.uri { Uri, Https }
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.tools.xorriso
 import extdeps.tools.grep
 import extdeps.tools.sed

dag/extdeps/realization/materialization_store_local.dag

@@ -1,6 +1,7 @@
 module extdeps.realization.materialization_store_local
 
 import extdeps.filesystem.filesystem_io {
+  Filesystem,
   FilesystemFailureKind, FilesystemNotFound, FilesystemAlreadyExists, FilesystemPermissionDenied,
   FilesystemOtherFailure,
   FilesystemExactRead, FilesystemExactPathRead, FilesystemExactPathAbsent,

dag/gunbc/auth/netrc_binding.dag

@@ -2,7 +2,7 @@ module gunbc.auth.netrc_binding
 
 import std.types { NonEmptyStr, String, Bool, Secret, FilePath }
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 
 // A CREDENTIAL BINDING: THE ONE SANCTIONED WAY A SECRET REACHES A SUBPROCESS ON THIS FLEET.
 //

dag/gunbc/clock_read.dag

@@ -1,7 +1,8 @@
 module gunbc.clock_read
 
 import std.types { String, NonEmptyStr }
-import extdeps.clock
+import extdeps.clock { Clock }
+import v2.std.optional { Present }
 
 fn clock_now_probed_at() -> NonEmptyStr? {
   let result = Clock.Now()

dag/gunbc/devboot/produce.dag

@@ -10,7 +10,7 @@ import extdeps.tools.env { env_path_resolved_program, env_prefixed_args }
 import v2.std.orchestration { EnvBinding, EnvSet }
 import extdeps.git
 import extdeps.git.plumbing
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import gunbc.devboot.transport {
   devboot_witness_run,
   devboot_ensure_directory,

dag/gunbc/fabric/fabric_event_log.dag

@@ -5,7 +5,7 @@ import std.nat { Nat, nat_range_inclusive }
 import std.algebra { trim }
 import std.measure { Count, One }
 import product.placement_supply { HostIdentity, host_identity_eq }
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.shell
 import extdeps.git
 import extdeps.git.plumbing

dag/gunbc/fabric/fabric_event_log_host.dag

@@ -2,10 +2,11 @@ module gunbc.fabric_event_log_host
 
 import std.types { String, NonEmptyStr, FilePath, EpochSecs }
 import std.algebra { trim }
-import extdeps.clock
+import extdeps.clock { Clock }
 import product.placement_supply { HostIdentity }
 import gunbc.roadmap_dashboard_instance { HostDashboardInstance, DashboardInstanceByHost, DashboardInstanceForHost, DashboardInstanceHostUnknown, dashboard_instance_for_host, dashboard_instance_event_log_root }
 import gunbc.fabric_event_log { fabric_event_log_placement, event_log_remote_for, EventLogLayout, event_log_layout }
+import v2.std.optional { Present }
 
 // WHERE THE EVENT LOG IS FROM THE EXECUTING HOST'S POINT OF VIEW: the dashboard instance declared
 // for the host supplies the executor's root (the mirror lives under it) and the identity the

dag/gunbc/host/host_effect_codex_supervised_turn.dag

@@ -4,7 +4,7 @@ import std.dissolution { DissolutionCondition, unbound_dissolution }
 import std.types { String, NonEmptyStr, Int, List, Bool }
 import extdeps.git.inspect
 import extdeps.gunbc
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.llm.codex_app_server_stdio_session { CodexAppServerStdioSessionIntent }
 import gunbc.host_effect { HostEffectTransport, LocalShell, SshShell, FleetSsh, EmitArtifactThenThinRun }
 import gunbc.ci_release_bins { release_bin_is_enrolled }

dag/gunbc/host/host_effect_nbd_proxy_serve.dag

@@ -20,7 +20,7 @@ import extdeps.bmc.webui.nbd_proxy_serve {
   nbd_proxy_serve_websocat_unit_name,
   nbd_proxy_serve_session_fingerprint,
 }
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.gunbc
 import gunbc.session_lease {
   ProcessPortScope,

dag/gunbc/host/host_effect_realize.dag

@@ -323,7 +323,7 @@ import gunbc.build_cache_instance { ci_cache_instance }
 import gunbc.srv3_boot_once_cd {
   srv3_boot_once_apply_read_back_sleep,
 }
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import std.measure { second_count, ByteSize, byte_size_count }
 import gunbc.srv3_ubuntu_install_media_artifact { srv3_ubuntu_install_media_artifact }
 import gunbc.srv3_seeded_install_media_artifact { srv3_seeded_install_media_artifact }

dag/gunbc/instruments/self_host_curated_seed_linked_harness.dag

@@ -3,7 +3,7 @@ module tools.self_host_curated_seed_linked_harness
 import std.dissolution { DissolutionCondition, dissolution_description, unbound_dissolution }
 
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.cargo_build
 import extdeps.git
 import extdeps.git.inspect

dag/gunbc/package_delivery.dag

@@ -49,7 +49,7 @@ import extdeps.http.client
 import extdeps.shell
 import extdeps.shell.exec
 import extdeps.llm.codex_app_server { CodexAppServerExecutable }
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.tools.npm
 import gunbc.host_cli_dependency {
   observe_host_cli_dependency,

dag/gunbc/roadmap/roadmap_belt_actuate.dag

@@ -418,8 +418,8 @@ import gunbc.roadmap_presentation {
 }
 import extdeps.gunbc
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
 import extdeps.filesystem.filesystem_io {
+  Filesystem,
   FilesystemEntryAbsent,
   FilesystemEntryListed,
   FilesystemEntryPresenceIndeterminate,

dag/gunbc/roadmap/roadmap_publication_helper.dag

@@ -7,7 +7,7 @@ import std.content_hash { content_hash_atom }
 import std.process { ProcessExit, ExitSuccess, exit_failure }
 import gunbc.output_policy { OutcomeIsData }
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem, filesystem_listing_names_entry }
 import extdeps.languages.json.emit {
   JsonValue,
   json_string,

dag/gunbc/srv3/srv3_boot_once_cd.dag

@@ -3,7 +3,7 @@ module gunbc.srv3_boot_once_cd
 import std.measure { Second, second }
 import extdeps.bmc.http
 import std.scoped_authorization { ScopedAuthorization }
-import std.types { Timestamp }
+import std.types { Timestamp, Unit }
 import gunbc.clock_read { clock_now_probed_at }
 import gunbc.workflow_escalation {
   workflow_destructive_step_refusal_reason
@@ -37,6 +37,7 @@ import gunbc.tools.bmc_onboard {
   boot_override_body,
   reset_body
 }
+import extdeps.filesystem.filesystem_io { Filesystem }
 
 data srv3_boot_once_apply_read_back_sleep: Second = second(count: 45)
 

dag/gunbc/tools/bmc_onboard.dag

@@ -2,7 +2,7 @@ module gunbc.tools.bmc_onboard
 
 import extdeps.bmc.http
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import extdeps.entropy
 import extdeps.cloud.gcp.secret_manager {
   sm_resolved_version_id,

dag/test/claim/materialization_store_local_wet_witness_test.dag

@@ -1,7 +1,7 @@
 module test.claim.materialization_store_local_wet_witness
 
 import extdeps.shell
-import extdeps.filesystem.filesystem_io
+import extdeps.filesystem.filesystem_io { Filesystem }
 import std.types { Bool, Int, List, String, NonEmptyStr }
 import std.content_hash { ContentHash, Fnv1a64Structural, content_hash_atom }
 import std.materialization_provider {