Add Algorithm Catalog app: filter NASA Disasters algorithms + submit activations

.github/workflows/algorithm-catalog-compact.yml

@@ -0,0 +1,42 @@
+name: Algorithm Catalog — compact request files
+
+# Mirrors dse-hub-compact.yml. Submissions arrive as uniquely-named files under
+# algorithm-catalog/data/requests/ (that uniqueness is what makes two people submitting at the same
+# time conflict-free). Once merged, this folds them into the canonical data and deletes the folded
+# files, so data/requests/ stays small no matter how many activations get filed.
+#
+# [skip ci] on the commit stops this push from re-triggering the validate workflow.
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "algorithm-catalog/data/requests/**"
+  workflow_dispatch:
+
+jobs:
+  compact:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+
+      - name: Apply requests and compact
+        run: node algorithm-catalog/scripts/compact.mjs
+
+      - name: Commit compacted canonicals (if changed)
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add algorithm-catalog/data/
+          if git diff --cached --quiet; then
+            echo "Nothing to commit."
+          else
+            git commit -m "chore: compact algorithm-catalog requests into canonical data [skip ci]"
+            git push
+          fi

.github/workflows/algorithm-catalog-validate.yml

@@ -0,0 +1,59 @@
+name: Algorithm Catalog — validate
+
+# THE STANDARDS GATE.
+#
+# The rules live once in algorithm-catalog/src/rules.ts (which the form enforces while you type)
+# and are mirrored in scripts/validate_data.py. This workflow is the third layer: it re-checks
+# every committed request/event/algorithm on the PR, and runs the parity test that proves the two
+# copies of the rules still agree. A submission that slips past the form still cannot land.
+#
+# No install step anywhere in the `validate` job — both scripts are stdlib-only Python 3.
+
+on:
+  pull_request:
+    paths:
+      - "algorithm-catalog/**"
+  push:
+    branches: [main]
+    paths:
+      - "algorithm-catalog/**"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  validate:
+    name: Data + rules parity
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      # Cross-checks algorithms/events/hazards/requests: hazard + product references resolve,
+      # thumbnails exist on disk, STAC names and dates and bboxes obey the same rules as the form.
+      - name: Validate committed data
+        run: python3 algorithm-catalog/scripts/validate_data.py
+
+      # Runs one fixture table through BOTH rule implementations and fails if they disagree, so
+      # rules.ts and validate_data.py can never silently drift apart.
+      - name: Rules parity (rules.ts vs validate_data.py)
+        run: python3 algorithm-catalog/scripts/rules_parity_test.py
+
+  build:
+    name: Typecheck + build
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: algorithm-catalog
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+
+      - run: npm ci
+
+      - run: npm run typecheck
+
+      - run: npm run build

.gitignore

@@ -66,3 +66,14 @@ leave-dashboard/dist/
 !cost-dashboard/tsconfig.json
 !cost-dashboard/tsconfig.node.json
 !cost-dashboard/public/data/*.json
+
+# Algorithm Catalog: dashboard config + the committed catalog data (algorithms/events/hazards)
+# and the submitted request files — re-included past the global *.json ignore. Unlike dse-hub
+# (which relies on `git add -f`), these negations mean a plain `git add algorithm-catalog/`
+# picks the data up, so a future contributor can't silently drop it from a commit.
+!algorithm-catalog/package.json
+!algorithm-catalog/package-lock.json
+!algorithm-catalog/tsconfig.json
+!algorithm-catalog/tsconfig.node.json
+!algorithm-catalog/data/*.json
+!algorithm-catalog/data/requests/*.json

CLAUDE.md

@@ -88,6 +88,20 @@ Netlify reads the `netlify.toml` **inside that base dir**, so the sites stay iso
   `.github/workflows/aws-pricing.yml` (weekly + dispatch; regions accumulate). A "Where these prices
   come from" panel hyperlinks every service to its AWS pricing page + raw price list + version. See
   `docs/AWS_PRICING.md`.
+- `algorithm-catalog/` — Vite React SPA; `algorithm-catalog/netlify.toml` (base=`algorithm-catalog`,
+  build, publish `dist`). A catalog of the **NASA Disasters product algorithms** (from
+  `Disasters-Learning-Portal/disasters-product-algorithms@dev`). **HDS (NASA Horizon Design System)
+  over USWDS, light-only.** Three tabs: **📝 Submit** (the request form, default landing),
+  **🌀 Events** (event catalog = canonical `events.json` + submitted requests), **🛰 Algorithms**
+  (filter by hazard / sensor / product / modality / date / event / AOI, via two entry modes —
+  "start from hazard" vs "start from sensor & product" — sharing one filter state). **No
+  generator/Action** — data is hand-curated `data/{algorithms,events,hazards}.json` bundled at BUILD
+  (plus `data/requests/*.json` overlaid via `import.meta.glob`, dse-hub's merge pattern). Submitting
+  opens a **prefilled new-file PR** (`new/main?filename=&value=`), same as leave-dashboard/dse-hub.
+  **The standard is enforced automatically**: `src/rules.ts` holds the rules (the
+  `YYYYMM_Hazard_Location` regex is lifted verbatim from upstream `dps/_validate.sh:29-36`),
+  mirrored 1:1 in `scripts/validate_data.py`, kept honest by `scripts/rules_parity_test.py`, and
+  gated in CI by `.github/workflows/algorithm-catalog-validate.yml`. See `docs/ALGORITHM_CATALOG.md`.
 
 ## Theming (light/dark — the fte / leave / pr dashboards; dse-hub is USWDS light-only)
 Each dashboard themes through **CSS custom properties**: light values live in `:root`, a
@@ -123,7 +137,20 @@ sets the attribute before first paint + `<meta name="color-scheme" content="dark
 - **Root `.gitignore` has `*.json`.** `git add <dir>` **silently skips** needed JSON — each dashboard's
   `package.json`/`tsconfig*.json`, `dse-hub/data/*.json`, `leave-dashboard/public/data/*.json`. You must
   **`git add -f`** them (that's how the sibling dashboards' JSON got committed). A `dse-hub` change touching
-  data won't be in the commit unless force-added.
+  data won't be in the commit unless force-added. **Exception: `algorithm-catalog/` has explicit `!`
+  negation lines** in the root `.gitignore`, so a plain `git add algorithm-catalog/` does pick its JSON
+  up — prefer that route for new apps. Check with `git check-ignore --no-index -v <path>` (plain
+  `git check-ignore` lies about already-tracked files).
+- **STAC event names need EXACTLY 2 underscores, and the catalog is deliberately stricter than
+  upstream here.** Upstream `dps/_validate.sh:29-36` ends its regex with `.+`, so the LOCATION slot
+  swallows extra underscores: `202501_Tropical_Cyclone_CA` passes there but silently parses as
+  hazard=`Tropical`, location=`Cyclone_CA`, and writes a wrong `HAZARD` GeoTIFF tag.
+  `algorithm-catalog/src/rules.ts` ends with `_[^_]+$` instead, so 3+ underscores is a hard **error**
+  (rule `underscore-count`) and the form won't submit. This also rejects `202501_Flood_CA_extra`,
+  which upstream `tests/integration/test_dps_validate.sh:41-48` explicitly accepts — a knowing
+  divergence, and the safe direction: everything we accept, DPS accepts too. Multi-word hazards and
+  locations are CamelCase (`TropicalCyclone`, `WinterWx`). The catalog serializes hazard **ids**
+  (= those tokens), never display labels.
 
 ## Key files
 `action.yml`, `pr-finder/action.yml`, `pr-finder/generate_pr_finder.py`,
@@ -137,3 +164,7 @@ DSE Hub: `dse-hub/src/{App,tabs,tz,TzContext,ChangesContext,changes,changesData}
 `dse-hub/src/meetings/{MeetingTracker,MeetingCalendar,recurrence,drafts,data}.{tsx,ts}`,
 `dse-hub/src/pi/{PiRoadmap,data,pi}.{tsx,ts}`, `dse-hub/data/{meetings,pis}.json`,
 `dse-hub/scripts/compact.mjs`, `.github/workflows/dse-hub-compact.yml`, `docs/DSE_HUB.md`.
+Algorithm Catalog: `algorithm-catalog/src/{types,rules,data,tabs,App}.{ts,tsx}`,
+`algorithm-catalog/src/{filters,catalog,events,request}/`, `algorithm-catalog/data/*.json`,
+`algorithm-catalog/scripts/{validate_data.py,rules_parity_test.py,compact.mjs}`,
+`.github/workflows/algorithm-catalog-{validate,compact}.yml`, `docs/ALGORITHM_CATALOG.md`.

README.md

@@ -13,6 +13,7 @@ diff. Intentionally open — it will grow to host other VEDA Actions experiments
 ### 🗓️ **Leave Dashboard:** https://veda-leave-dashboard.netlify.app
 ### 🧭 **DSE Hub:** https://veda-dse-hub.netlify.app
 ### 💵 **AWS Cost Calculator (Disasters Hub):** https://veda-aws-dashboard.netlify.app
+### 🛰️ **Algorithm Catalog:** _(Netlify site pending — base dir `algorithm-catalog`)_
 
 ## Use this action in another repo
 The report is a **reusable composite action** (`action.yml`). Any repo can import it — just point
@@ -56,6 +57,9 @@ action (`uses: ./`) and then publishes to a `fte-report/<pi>` branch + opens a l
 | `.github/workflows/leave-tracker.yml` | self-consumer that publishes the leave report to the `leave-tracker/report` branch |
 | `leave-dashboard/` | React SPA (Netlify) — calendar of who's out, person-picker, team-risk heatmap, add-person-via-PR — [live](https://veda-leave-dashboard.netlify.app) |
 | `docs/LEAVE_TRACKER.md` | Leave Tracker data model, color map, overrides, gotchas |
+| `algorithm-catalog/` | React SPA (Netlify) — filter the NASA Disasters product algorithms by hazard / date / event / sensor / product, and submit a new activation request as a prefilled PR. **No Action** — hand-curated JSON bundled at build. |
+| `.github/workflows/algorithm-catalog-validate.yml` | **the standards gate**: fails a PR whose event name isn't `YYYYMM_Hazard_Location` (same regex DPS enforces), plus typecheck + build |
+| `docs/ALGORITHM_CATALOG.md` | Algorithm Catalog data model, the two entry modes, standards enforcement, gotchas |
 
 ## Quickstart
 

algorithm-catalog/.gitignore

@@ -0,0 +1,6 @@
+node_modules
+dist
+*.local
+.DS_Store
+__pycache__/
+*.pyc