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* docs(manual): add introduction page * docs(manual): rewrite getting started as guided first run * docs(manual): rewrite writing specs as a folio tutorial * docs(manual): document missing spec API in reference * docs(manual): plain-language rewrite of runs page * docs: real introductions on index pages and README * fix(docs): sibling links from directory-style pages need ../ * fix(docs): correct sampling and restart-cost claims to match implementation * docs: nav lists Introduction and Case study; roadmap points to milestone * docs(manual): make getting started target the reader's own app, not Folio * docs(manual): add Folio case study page * docs: point manual navigation at the case study * docs(readme): lead with the case study, fix roadmap link * docs: roadmap links to milestone, sync clear-data default and cross-links
63 lines
2.1 KiB
Markdown
63 lines
2.1 KiB
Markdown
---
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title: sanderling replay
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---
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# sanderling replay
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Local web UI for exploring runs produced by `sanderling test`. Reads `runs/<id>/meta.json` and `runs/<id>/trace.jsonl` from disk.
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```
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sanderling replay [run-or-runs-dir] [--port N] [--no-open] [--dev]
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```
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The positional argument can be a runs directory or a single run directory (auto-detected by `meta.json`). Defaults to `./runs`.
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## Panels
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| Panel | What it shows |
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|---|---|
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| Screenshot | Device screenshot for the focused step, with the dispatched action's target spotlit. |
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| ActionList | Ordered list of steps with the verb and target for each action. |
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| Timeline | Per-property lane chart over the run; cells coloured by violated, pending, or holds. |
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| ViolationsPanel | Property statuses at the focused step with residual formulas for any that failed. |
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| HierarchyPanel | Filterable table of every UI element captured at the focused step; mirrors the selectors documented in [Spec language reference](../spec-language/). |
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| SnapshotTable | Flattened `snapshots` map for the focused step, with diffs against the previous step. |
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| MetricsChart | Heap and other host-side metrics sampled per step. |
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| ExceptionsPanel | Uncaught exceptions captured during the run, with a jump-to-first control. |
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## Keyboard shortcuts
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| Key | Action |
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|---|---|
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| `j`, `Right` | Next step |
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| `k`, `Left` | Previous step |
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| `Shift+j`, `Shift+Right` | Jump 10 forward |
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| `Shift+k`, `Shift+Left` | Jump 10 back |
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| `g` / `G` | First / last step |
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| `.` | Next step with a violation |
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Arrow keys inside a tablist or listbox yield to those widgets. Use `j`/`k` when focus is on one.
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## Deep links
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`/runs/:id/steps/:n` links to a specific step. Use it in issues or PRs when pointing at a violation.
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The run index auto-refreshes over SSE as new runs land, so `sanderling replay` and `sanderling test` can run side by side.
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## Development
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Two-process loop while iterating on the UI:
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```
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make web-dev # bun + vite on http://127.0.0.1:5173
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make replay-dev # sanderling replay --dev, proxies non-API to 5173
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```
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Single binary with the bundle embedded:
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```
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make sanderling
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```
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