Add FMD fault inventory to sled-agent API

Exposes illumos Fault Management Daemon (FMD) data through the
sled-agent inventory endpoint. This lets the control plane see
diagnosed hardware/software faults on each sled.

New API version 35 adds an `fmd: Option<FmdInventory>` field to
`Inventory`. When present, it contains:
- Cases: diagnosed faults with UUID, diagnostic code, URL, and the
  full event nvlist serialized as JSON
- Resources: affected components with FMRI, fault status flags

On illumos, sled-agent queries FMD on each inventory request. On
non-illumos (sim, tests), the field is None. Database storage is
not included — that's a follow-up.

Author: smklein

Cargo.lock

@@ -504,6 +504,8 @@ filetime = "0.2.26"
 flate2 = "1.1.2"
 float-ord = "0.3.2"
 flume = "0.11.1"
+fmd-adm = { git = "https://github.com/oxidecomputer/fmd-adm", rev = "fffb52212fb1e073e9f1b16761b3614af8b38063" }
+fmd-adm-sys = { git = "https://github.com/oxidecomputer/fmd-adm", rev = "fffb52212fb1e073e9f1b16761b3614af8b38063" }
 foreign-types = "0.3.2"
 fs-err = "3.1.1"
 futures = "0.3.31"

Cargo.toml

@@ -60,6 +60,9 @@ progenitor::generate_api!(
         ExternalIpConfig = omicron_common::api::internal::shared::ExternalIpConfig,
         ExternalIpv4Config = omicron_common::api::internal::shared::ExternalIpv4Config,
         ExternalIpv6Config = omicron_common::api::internal::shared::ExternalIpv6Config,
+        FmdCase = sled_agent_types_versions::latest::inventory::FmdCase,
+        FmdInventory = sled_agent_types_versions::latest::inventory::FmdInventory,
+        FmdResource = sled_agent_types_versions::latest::inventory::FmdResource,
         Generation = omicron_common::api::external::Generation,
         Hostname = omicron_common::api::external::Hostname,
         ImportExportPolicy = sled_agent_types_versions::latest::early_networking::ImportExportPolicy,

clients/sled-agent-client/src/lib.rs

@@ -39,6 +39,10 @@ toml.workspace = true
 
 omicron-workspace-hack.workspace = true
 
+[target.'cfg(target_os = "illumos")'.dependencies]
+# See omicron-rpaths for more about the "fmd-adm-sys" dependency.
+fmd-adm-sys.workspace = true
+
 [dev-dependencies]
 expectorate.workspace = true
 nexus-test-utils.workspace = true

cockroach-admin/Cargo.toml

@@ -94,6 +94,10 @@ update-engine.workspace = true
 url.workspace = true
 uuid.workspace = true
 
+[target.'cfg(target_os = "illumos")'.dependencies]
+# See omicron-rpaths for more about the "fmd-adm-sys" dependency.
+fmd-adm-sys.workspace = true
+
 [dev-dependencies]
 camino-tempfile.workspace = true
 expectorate.workspace = true

dev-tools/omdb/Cargo.toml

@@ -31,6 +31,10 @@ signal-hook-tokio.workspace = true
 tokio.workspace = true
 toml.workspace = true
 
+[target.'cfg(target_os = "illumos")'.dependencies]
+# See omicron-rpaths for more about the "fmd-adm-sys" dependency.
+fmd-adm-sys.workspace = true
+
 [dev-dependencies]
 expectorate.workspace = true
 omicron-dev-lib.workspace = true

dev-tools/omicron-dev/Cargo.toml

@@ -52,6 +52,10 @@ update-common.workspace = true
 uuid.workspace = true
 omicron-workspace-hack.workspace = true
 
+[target.'cfg(target_os = "illumos")'.dependencies]
+# See omicron-rpaths for more about the "fmd-adm-sys" dependency.
+fmd-adm-sys.workspace = true
+
 [dev-dependencies]
 # To keep test iterations fast, please avoid a dependency on omicron-nexus or
 # its database code here. Instead, put those tests inside

dev-tools/reconfigurator-cli/Cargo.toml

@@ -37,6 +37,10 @@ update-engine.workspace = true
 uuid.workspace = true
 omicron-workspace-hack.workspace = true
 
+[target.'cfg(target_os = "illumos")'.dependencies]
+# See omicron-rpaths for more about the "fmd-adm-sys" dependency.
+fmd-adm-sys.workspace = true
+
 [[bin]]
 name = "reconfigurator-exec-unsafe"
 path = "src/main.rs"