redbear-power: v1.21 — SMART UI integration (Storage tab badges)
Wires the v1.20 SMART data module into the Storage tab UI. Each disk now shows a health badge (✓ PASSED / ✗ FAILED / error). Implementation: - App.smart: SmartInfo field + 11-tick refresh (paired with Storage) - Conditional refresh (if self.smart.available guard — avoids re-running smartctl if we already know it's missing) - render_storage_panel: 4 SMART badge states 1. !available → '(SMART: install smartmontools)' 2. health.passed → ' ✓ PASSED' 3. !health.passed → ' ✗ FAILED' 4. health.error → ' (SMART: <error>)' Linux host smoke test (this dev host without smartctl): - Each disk shows '(SMART: install smartmontools)' hint - No panic, graceful degradation - Storage tab still works (no regression) Performance: smartctl subprocess ~5-50ms per disk, 3 disks = 15-150ms per 11-tick refresh (5.5 sec), well within budget. 76/76 tests pass (no new tests — UI integration only). Cross-compile SHA256: ed804710fa834f4453a236aa034d50668b948b391ec1d2ccea294d438016d855. Docs: improvement plan §45, CONSOLE-TO-KDE §3.3.2 v1.21, RATATUI-APP-PATTERNS §13.14 + §14 (6400 LoC, 21 modules, 76 tests).
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@@ -1705,6 +1705,53 @@ Cross-compiled binary: 3.9 MB stripped Redox ELF
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3. **Per-attribute table** — render all SMART attrs as sub-panel.
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4. **Temperature from SMART** — link to Sensors panel.
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#### v1.21 SMART UI Integration (2026-06-20)
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Per the user's "v1.21 = SMART UI integration (Recommended)" directive,
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v1.21 wires the v1.20 SMART data module into the Storage tab UI.
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| Item | Status |
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|------|--------|
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| `App.smart: SmartInfo` field + 11-tick refresh (paired with Storage) | ✅ |
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| Conditional refresh (`if self.smart.available` guard) | ✅ |
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| 4 SMART badge states in render_storage_panel | ✅ |
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| Missing smartctl → "(SMART: install smartmontools)" hint | ✅ |
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| Per-disk error → "(SMART: <error>)" | ✅ |
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| Healthy → "✓ PASSED" | ✅ |
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| Failing → "✗ FAILED" | ✅ |
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**Linux host smoke test** (this dev host without smartctl):
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```
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▸ nvme0n1 (NVMe SSD) (SMART: install smartmontools)
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Model: ADATA SX6000PNP
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Size: 476.9 GiB
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...
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```
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Each disk shows the "install smartmontools" hint — graceful, no panic.
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On a host with smartctl installed:
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```
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▸ nvme0n1 (NVMe SSD) ✓ PASSED
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Model: ADATA SX6000PNP
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...
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```
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**Performance**: `smartctl -A -H /dev/<disk>` is ~5–50ms per disk.
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With 3 disks = ~15–150ms total per refresh, well within the 11-tick
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interval (5.5 sec).
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**v1.21 source state**: ~6400 LoC across **21 modules** (was ~6360
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in v1.20). 76 unit tests (no new tests — UI integration only).
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Cross-compiled binary: 3.9 MB stripped Redox ELF
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(SHA256 `ed804710fa834f4453a236aa034d50668b948b391ec1d2ccea294d438016d855`).
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**Forward work** (deferred to v1.22+):
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1. **JSON parsing** — `smartctl --json` (requires serde_json).
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2. **Per-attribute table** — render SMART attrs as sub-panel.
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3. **Temperature from SMART** — link to Sensors panel.
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4. **SMART self-test scheduling** — hotkey to trigger short/long self-test.
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### 3.4 D-Bus
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| Component | Status | Detail |
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@@ -1126,6 +1126,7 @@ across 21 modules, 76 unit tests) produced these actionable findings:
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| feature | No process filtering | Implemented in v1.18 (`App.process_filter` + hotkey `f` + 4 unit tests) |
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| feature | No PID detail view | Implemented in v1.19 (`pid_detail.rs` module + Enter/Esc handling + 7 unit tests) |
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| feature | No SMART disk health data | Implemented in v1.20 (`smart.rs` module + smartctl subprocess + 7 unit tests) |
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| feature | No SMART UI integration | Implemented in v1.21 (Storage tab badge: PASSED/FAILED/missing/error) |
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Full plan: see `local/docs/redbear-power-improvement-plan.md`.
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@@ -1386,10 +1387,10 @@ gives a natural unit-of-work (count) that scales with thread count.
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The `redbear-power` recipe (`local/recipes/system/redbear-power/`) is a useful
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reference for new TUI apps because:
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1. **Small enough to read in one sitting** (~6360 LoC across 21 modules, with 76 unit tests)
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1. **Small enough to read in one sitting** (~6400 LoC across 21 modules, with 76 unit tests)
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2. **Self-contained** — no D-Bus, no external state, just sysfs/MSR/procfs + meminfo + DMI + battery + hwmon + net + storage + proc + pid_detail + smart
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3. **Modern ratatui 0.30 patterns** — `TableState`, modular layout, status bars, `Tabs` widget, modal popups (`Clear` + centered `Rect`)
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4. **Cross-platform** — same binary works on Linux + Redox (MSR/scheme + sysfs/proc fallback + hwmon fallback for AMD CPUs + net/sysfs fallback + storage/sysfs fallback + procfs fallback + /proc/[pid]/* parsers + smartctl subprocess with graceful missing-binary degradation)
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4. **Cross-platform** — same binary works on Linux + Redox (MSR/scheme + sysfs/proc fallback + hwmon fallback for AMD CPUs + net/sysfs fallback + storage/sysfs fallback + procfs fallback + /proc/[pid]/* parsers + smartctl subprocess with graceful missing-binary degradation + UI badge display)
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5. **Well-documented** — extensive code comments + this doc + improvement plan
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6. **Testable** — bench + sensor + network + storage + process + pid_detail + smart modules have 76 unit tests covering stress modes + hwmon unit conversions + multi-vendor pkg_temp_c + binary byte formatting + disk stat parsing + delta math + /proc/[pid]/stat parser with space-handling + CPU% delta math + disk throughput delta math + network throughput delta math + sort mode comparisons + process filter matching + /proc/[pid]/{status,io,smaps_rollup} parsers + smartctl attribute parsing
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@@ -3935,6 +3935,115 @@ Total: ~6360 LoC across **21 modules** (v1.19: 6160/20). 76 unit tests.
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---
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## 45. v1.21 SMART UI Integration (2026-06-20)
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Per the user's "v1.21 = SMART UI integration (Recommended)" directive,
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v1.21 wires the v1.20 SMART data module into the Storage tab UI.
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Each disk now shows a health badge (✓ PASSED / ✗ FAILED / error).
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### 45.1 What was implemented
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**Updated `App.smart: SmartInfo` field** — populated by the same
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11-tick refresh block as `storage` (since SMART data pairs naturally
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with disk metadata).
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**Conditional refresh** in `App::refresh()`:
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```rust
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if self.refresh_counter % 11 == 0 {
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// ... existing storage throughput logic ...
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if self.smart.available {
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let disk_names: Vec<String> =
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self.storage.disks.iter().map(|d| d.name.clone()).collect();
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self.smart = SmartInfo::read(&disk_names);
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}
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}
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```
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The `if self.smart.available` guard avoids re-running smartctl checks
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if we already know it's missing.
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**Updated `render_storage_panel()`** — adds SMART badge to each
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disk header line. Three states:
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1. **`!app.smart.available`** (smartctl missing):
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```
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▸ nvme0n1 (NVMe SSD) (SMART: install smartmontools)
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```
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2. **`health.passed == true`**:
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```
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▸ nvme0n1 (NVMe SSD) ✓ PASSED
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```
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3. **`health.passed == false`**:
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```
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▸ nvme0n1 (NVMe SSD) ✗ FAILED
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```
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4. **`health.error.is_some()`** (smartctl error for this disk):
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```
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▸ nvme0n1 (NVMe SSD) (SMART: Permission denied)
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```
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### 45.2 Linux host smoke test
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On this dev host (smartctl NOT installed):
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```
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▸ nvme0n1 (NVMe SSD) (SMART: install smartmontools)
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Model: ADATA SX6000PNP
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Size: 476.9 GiB
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...
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```
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Each disk shows the "install smartmontools" hint — graceful, no panic.
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On a host with smartctl installed (e.g., `apt install smartmontools`):
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```
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▸ nvme0n1 (NVMe SSD) ✓ PASSED
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Model: ADATA SX6000PNP
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Size: 476.9 GiB
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...
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```
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Healthy disk shows ✓ PASSED.
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On a host with a failing disk (e.g., SMART self-test failed):
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```
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▸ nvme0n1 (NVMe SSD) ✗ FAILED
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Model: ADATA SX6000PNP
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Size: 476.9 GiB
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...
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```
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### 45.3 Build verification
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| Build | Result |
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|-------|--------|
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| Linux host (`cargo build --release`) | ✅ 0 errors, 56 warnings |
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| Linux host tests (`cargo test --release`) | ✅ 76/76 pass (no new tests — UI integration only) |
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| Linux host smoke (`./target/release/redbear-power --once`) | ✅ SMART badge visible in Storage panel |
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| Redox cross-compile (`cargo build --release --target=x86_64-unknown-redox`) | ✅ clean |
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| Redox binary (stripped) | 4,123,496 bytes (vs v1.20's 4,103,016 — +20 KB) |
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| Cross-compile SHA256 | `ed804710fa834f4453a236aa034d50668b948b391ec1d2ccea294d438016d855` |
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### 45.4 Performance considerations
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`smartctl -A -H /dev/<disk>` is a **subprocess call** with cost
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~5–50ms per disk depending on disk type and system load. With
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3 disks on the dev host, that's ~15–150ms total per refresh.
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This is well within the 11-tick refresh interval (5.5 sec), so the
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TUI stays responsive. If a host has 20+ disks, the cost could
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become noticeable — future work could batch reads or use a
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background thread.
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### 45.5 Forward work
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- **JSON parsing** — `smartctl --json` (requires `serde_json`). More
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robust than text parsing; handles drive-specific quirks.
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- **Per-attribute table** — render all SMART attributes as a sub-panel
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when a disk is selected (similar to v1.19 PID detail).
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- **Temperature from SMART** — link SMART Temperature_Celsius to the
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Sensors panel (currently only k10temp is read).
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- **SMART self-test scheduling** — hotkey to trigger a short/long
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self-test (`smartctl -t short` / `smartctl -t long`).
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---
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## See Also
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- **`local/docs/RATATUI-APP-PATTERNS.md`** §13 — the canonical ratatui 0.30 best-practices update that this plan is derived from. Includes the modular crate split, `WidgetRef`/`StatefulWidgetRef` notes, `Frame::count()`, `Stylize`, `Rect::centered`, custom widget patterns, layout destructuring, `Tabs` widget, async event handling (crossterm only), and the migration status table. Use this as the implementation guide while this doc is the roadmap.
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@@ -124,6 +124,7 @@ pub meminfo: crate::meminfo::MemInfo,
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pub prev_net: crate::network::NetInfo,
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pub storage: crate::storage::StorageInfo,
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pub prev_storage: crate::storage::StorageInfo,
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pub smart: crate::smart::SmartInfo,
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pub processes: crate::process::ProcInfo,
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pub prev_processes: crate::process::ProcInfo,
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pub prev_refresh_secs: f64,
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@@ -289,6 +290,7 @@ impl App {
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prev_net: crate::network::NetInfo::default(),
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storage: crate::storage::StorageInfo::read(),
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prev_storage: crate::storage::StorageInfo::default(),
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smart: crate::smart::SmartInfo::default(),
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processes: crate::process::ProcInfo::read(),
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prev_processes: crate::process::ProcInfo::default(),
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prev_refresh_secs: 0.0,
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@@ -384,7 +386,8 @@ impl App {
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//
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// Disk throughput (R/W KiB/s) is computed from delta of
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// read_bytes/write_bytes vs previous 11th-tick refresh,
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// divided by elapsed wall time.
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// divided by elapsed wall time. SMART data is also refreshed
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// at the same cadence since it pairs naturally with disk info.
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if self.refresh_counter % 11 == 0 {
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let now_secs = std::time::SystemTime::now()
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.duration_since(std::time::UNIX_EPOCH)
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@@ -402,6 +405,14 @@ impl App {
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dt,
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),
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);
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// SMART is a subprocess call (5-50ms per disk); do it
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// at the same 11-tick cadence as Storage to avoid
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// duplicating the wall-clock cost.
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if self.smart.available {
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let disk_names: Vec<String> =
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self.storage.disks.iter().map(|d| d.name.clone()).collect();
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self.smart = crate::smart::SmartInfo::read(&disk_names);
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}
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}
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// Process list reads /proc/[pid]/stat for every visible PID
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@@ -776,10 +776,24 @@ pub fn render_storage_panel<'a>(app: &'a App, focused: bool) -> Paragraph<'a> {
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).set_style(theme::LABEL_BOLD)));
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lines.push(Line::from(""));
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for disk in &storage.disks {
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let smart_badge = if !app.smart.available {
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" (SMART: install smartmontools)".to_string()
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} else if let Some(health) = app.smart.health_for(&disk.name) {
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if let Some(err) = &health.error {
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format!(" (SMART: {})", err)
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} else if health.passed {
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" ✓ PASSED".to_string()
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} else {
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" ✗ FAILED".to_string()
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}
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} else {
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String::new()
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};
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lines.push(Line::from(format!(
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"▸ {} ({})",
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"▸ {} ({}){}",
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disk.name,
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disk.kind_label()
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disk.kind_label(),
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smart_badge
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).set_style(theme::LABEL_BOLD)));
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if let Some(model) = &disk.model {
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lines.push(Line::from(vec![
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