Rebuild README.md + index.html from updated README.Rmd

Source-of-truth fix: README.md was hand-written in the previous commit
because the html_document render failed (staticimports + DT not
installed). Both packages installed; README.Rmd now renders cleanly to
both targets:

- README.md (github_document, rmd_on=FALSE) — GitHub landing page
- index.html (html_document, rmd_on=TRUE) — newgraphenvironment.com/stac_dem_bc/

params$update_query=FALSE so the live STAC search did not re-run; table
content uses the cached data/stac_result.rds from the last collection
sync.

No content change vs the previous hand-written README.md — render just
makes the GitHub view authoritative from the .Rmd source.

Author: NewGraphEnvironment

README.html

@@ -9,7 +9,7 @@ stac_dem_bc
 
 The goal of
 [`stac_dem_bc`](https://github.com/NewGraphEnvironment/stac_dem_bc) is
-to serve British Columbia's [LidarBC](https://lidar.gov.bc.ca/) digital
+to serve British Columbia’s [LidarBC](https://lidar.gov.bc.ca/) digital
 elevation model collection (~58,000 GeoTIFFs hosted on the provincial
 objectstore) as a [SpatioTemporal Asset Catalog
 (STAC)](https://stacspec.org/), queryable by location and time via the
@@ -20,16 +20,16 @@ objectstore) as a [SpatioTemporal Asset Catalog
 <br>
 
 The build pipeline lives under [`scripts/`](scripts/README.md) — a
-six-step flow (fetch → validate-access → collection-create →
-item-create → item-validate → s3-sync) that turns the raw provincial
-GeoTIFF URLs into a searchable pgstac catalog. See the
-[scripts README](scripts/README.md) for the pipeline walkthrough; key
-concepts (COG, STAC, pgstac, date extraction from filenames, validation
-caching for incremental rebuilds) are explained there in plain language.
+six-step flow (fetch → validate-access → collection-create → item-create
+→ item-validate → s3-sync) that turns the raw provincial GeoTIFF URLs
+into a searchable pgstac catalog. See the [scripts
+README](scripts/README.md) for the pipeline walkthrough; key concepts
+(COG, STAC, pgstac, date extraction from filenames, validation caching
+for incremental rebuilds) are explained there in plain language.
 
 <br>
 
-<img src="fig/cover.JPG" width="100%" style="display: block; margin: auto;" />
+<img src="fig/cover.JPG" alt="" width="100%" style="display: block; margin: auto;" />
 
 <br>
 
@@ -47,39 +47,47 @@ aoi <- bcdata::bcdc_query_geodata("freshwater-atlas-watershed-groups") |>
   sf::st_transform(crs = 4326)
 
 date_start <- "2018-01-01T00:00:00Z"
-date_end   <- "2020-12-31T00:00:00Z"
+date_end <- "2020-12-31T00:00:00Z"
 
 # use rstac to query the collection
 q <- rstac::stac("https://images.a11s.one/") |>
   rstac::stac_search(
     collections = "stac-dem-bc",
     intersects = jsonlite::fromJSON(
-      geojsonsf::sf_geojson(aoi, atomise = TRUE, simplify = FALSE),
+      geojsonsf::sf_geojson(
+        aoi, atomise = TRUE, simplify = FALSE
+      ),
       simplifyVector = FALSE
     ) |> (\(x) x$geometry)(),
     datetime = paste0(date_start, "/", date_end)
   ) |>
   rstac::post_request()
 
-# fetch all matching items
-r <- q |> rstac::items_fetch()
+# get details of the items
+r <- q |>
+  rstac::items_fetch()
 
-# extract download URLs
+# burn the results locally so we can serve it instantly on index.html builds
+saveRDS(r, "data/stac_result.rds")
+```
+
+``` r
+r <- readRDS("data/stac_result.rds")
+# build the table to display the info
 tab <- tibble::tibble(
-  url_download = purrr::map_chr(
-    r$features,
-    ~ purrr::pluck(.x, "assets", "image", "href")
-  )
+  url_download = purrr::map_chr(r$features, ~ purrr::pluck(.x, "assets", "image", "href"))
 )
 ```
 
+<br>
+
 Please see <http://www.newgraphenvironment.com/stac_dem_bc> for the
 published table of collection links.
 
 ## QGIS Data Source Manager (v3.42+)
 
 QGIS 3.42 added native STAC support — connect directly to the catalog
-and filter by the current map view. See [Lutra Consulting's STAC-in-QGIS
+and filter by the current map view. See [Lutra Consulting’s STAC-in-QGIS
 blog post](https://www.lutraconsulting.co.uk/blogs/stac-in-qgis) for a
 walk-through.
 
@@ -89,7 +97,6 @@ walk-through.
 <p class="caption">
 
 Connecting to <https://images.a11s.one>
-
 </p>
 
 </div>
@@ -100,7 +107,6 @@ Connecting to <https://images.a11s.one>
 <p class="caption">
 
 Using the field of view in QGIS to filter results
-
 </p>
 
 </div>
@@ -112,30 +118,31 @@ collections:
 
 - [`stac_uav_bc`](https://github.com/NewGraphEnvironment/stac_uav_bc) —
   UAV imagery, organized by watershed
-- [`stac_airphoto_bc`](https://github.com/NewGraphEnvironment/stac_airphoto_bc) —
-  historic airphoto thumbnails (1963–2019)
+- [`stac_airphoto_bc`](https://github.com/NewGraphEnvironment/stac_airphoto_bc)
+  — historic airphoto thumbnails (1963–2019)
 
 ## Roadmap
 
 - **uv-based Python dependency management**
-  ([#16](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/16))
+  ([\#16](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/16))
   — migrate from conda to uv for faster, more reproducible Python
   environments.
 - **Structured logging + performance benchmarking**
-  ([#6](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/6)) —
+  ([\#6](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/6)) —
   instrument the pipeline so build performance is quantifiable across
   runs.
 - **True footprint geometry**
-  ([#2](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/2)) —
+  ([\#2](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/2)) —
   recalculate per-item footprints to exclude no-data pixels rather than
   using bounding boxes; gives accurate spatial-overlap queries.
 - **Validation-failure triage**
-  ([#11](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/11))
+  ([\#11](https://github.com/NewGraphEnvironment/stac_dem_bc/issues/11))
   — STACError on specific item JSONs; underlying root cause + automated
   retry.
 
-Browse [open issues](https://github.com/NewGraphEnvironment/stac_dem_bc/issues)
-for the full backlog.
+Browse [open
+issues](https://github.com/NewGraphEnvironment/stac_dem_bc/issues) for
+the full backlog.
 
 ## License