refactor(ci): use multi-R-version images across workflows (#70)

## Summary

- Switches all 64 `.crow/*.yaml` workflows, the `Justfile`, and the commented-out `build-all-versions-install-deps.yaml` template to the new multi-R-version container images.
- Each image tag drops `-${R_VERSION}` (e.g. `build-env-alpine:3.22-4.5` → `build-env-alpine:3.22`); workflows pick an R version by calling `/opt/R/${R_VERSION}/bin/R` explicitly.
- Pattern-1 workflows (hard-coded image tag) gain a single `R_VERSION:` env var per file.
- Pattern-2 workflows (`build-all-versions-*`, matrix-driven) continue to receive `R_VERSION` via `crow pipeline create --var`.

## Platform → R_VERSION mapping

| Platform | Image | R_VERSION |
| --- | --- | --- |
| alpine 3.22 / 3.23 | `build-env-alpine:3.{22,23}` | 4.5.3 |
| ubuntu jammy / noble | `build-env-ubuntu:{jammy,noble}` | 4.4.3 |
| redhat 8 / 9 | `build-env-redhat:{8,9}` | 4.4.3 |
| redhat 10 | `build-env-redhat:10` | 4.5.3 |

The `alpine-321` audit-only workflows fall back to `build-env-alpine:3.23` since no 3.21 image exists in the new scheme; the audits only query S3/CRAN, so the container OS does not affect correctness.

## Bug fixes folded in

1. All six `weekly-audit-missing-alpine-*.yaml` files were pinned to `alpine:3.23-4.5` regardless of platform.
   Now each one points at its own alpine image.
2. All fourteen `update-package-index-*.yaml` files were pinned to `build-env-ubuntu:noble-4.4` (or `noble-4.5` for `redhat-10-amd64`) regardless of platform.
   Now each one uses its own platform's image.
3. `process-updates-ubuntu-2404-{amd64,arm64}.yaml` had `R_VERSION` of `4.4` (no patch) baked into the tag.
   Aligned to `4.4.3`, matching the audit and rebuild counterparts.

## Smoke targets (post-merge)

One workflow per shape, ready to dry-run:

- `process-updates-alpine-322-amd64.yaml`
- `weekly-rebuild-missing-redhat-9-amd64.yaml`
- `weekly-audit-missing-ubuntu-2204-amd64.yaml`
- `update-package-index-redhat-10-amd64.yaml`
- `archive-missed-packages.yaml`
- `build-all-versions-amd64.yaml` (with its install-deps predecessor)
- `build-r-minor-sensitive-packages.yaml`

## Follow-ups (out of scope, surfaced during review)

- `process-updates-redhat-10-{amd64,arm64}.yaml` set `codename = "rhel9"` in their `upload_package_index(...)` calls.
  Pre-existing bug — should be `"rhel10"`. The `update-package-index-redhat-10-*` counterparts already use `"rhel10"` correctly.
- `update-package-index-redhat-8-amd64.yaml` is missing the `packageVersion("bincraft")` diagnostic line that every sibling file has.
  Pre-existing asymmetry between amd64 and arm64.

## Spec & plan

- Spec: `docs/superpowers/specs/2026-05-25-multi-r-version-images-design.md`
- Plan: `docs/superpowers/plans/2026-05-25-multi-r-version-images.md`

Reviewed-on: #70

.crow/process-updates-ubuntu-2404-arm64.yaml

@@ -13,7 +13,7 @@ labels:
 
 steps:
   - name: 'Processing Updates'
-    image: reg.devxy.io/rpkgs/build-env-ubuntu:noble-4.4
+    image: reg.devxy.io/rpkgs/build-env-ubuntu:noble
     pull: true
     environment:
       RED_HAT_DEV_PW:
@@ -40,6 +40,7 @@ steps:
       # set the location of the 'pkgcache' cache dir which persists the R package dependencies needed to install the packages themselves
       R_PKG_CACHE_DIR: /mnt/cache/pkgcache
       R_LIBS_USER: /mnt/cache/R-pkgs
+      R_VERSION: 4.4.3
       CCACHE_DIR: /mnt/cache/ccache
       PLATFORM: ubuntu-2404
       ARCH: arm64
@@ -50,11 +51,11 @@ steps:
     commands:
       - git clone -q https://pat-s:$$REPO_RO_TOKEN@git.devxy.io/devxy/build-cran-binaries.git .
       - rm -rf /mnt/cache/R-pkgs/00LOCK-r-pkg-binaries /mnt/cache/R-pkgs/00LOCK-bincraft /mnt/cache/R-pkgs/00LOCK-pak /mnt/cache/pkgcache/R/pkgcache /mnt/cache/pkgcache/R/pkgcache /mnt/cache/R-pkgs/pkgcache /mnt/cache/R-pkgs/00LOCK-pak/mnt/cache/R-pkgs/00LOCK-RPostgres /mnt/cache/R-pkgs/bincraft
-      - R -q -e 'pak::pak("git::https://codefloe.com/rpkgs/bincraft.git")'
-      - R -q -e 'packageVersion("bincraft")'
+      - /opt/R/${R_VERSION}/bin/R -q -e 'pak::pak("git::https://codefloe.com/rpkgs/bincraft.git")'
+      - /opt/R/${R_VERSION}/bin/R -q -e 'packageVersion("bincraft")'
       - mkdir -p /mnt/cache/pkgcache /mnt/cache/R-pkgs /mnt/cache/ccache /mnt/cache/packages
       # options(future.globals.onReference = NULL): for some reason s3fs::file_delete() throws 'Error: Detected a non-exportable reference ('externalptr') in one of the globals ('FUN' of class 'function') used in the future expression' otherwise
-      - xvfb-run R -q -e "options(crayon.enabled = TRUE, Ncpus = 4, future.globals.onReference = 'error', repos = structure(c(getOption('repos'),INLA='https://inla.r-inla-download.org/R/stable'))); progressr::handlers('cli'); progressr::handlers(global = TRUE); options(future.globals.onReference = NULL); bincraft::process_cran_updates(interval = $INTERVAL, platform = 'ubuntu-2404', process_updated = TRUE, process_new = TRUE, process_removed = TRUE, s3_endpoint = 'https://s3.eu-central-003.backblazeb2.com', s3_region = 'eu-central-003', s3_bucket = 'devxy-rpkgs-binaries', s3_access_key_id = Sys.getenv('B2_S3_ACCESS_KEY'), s3_secret_access_key = Sys.getenv('B2_S3_SECRET_KEY'), metadata_db_host = 'r-binaries.devxy.io', metadata_db_name = 'build_metadata', metadata_db_table = 'single_builds', metadata_db_user = 'rpkgs', metadata_db_password = Sys.getenv('PGPASS'), metadata_db_sslmode = 'require', metadata_db_port = 15432, archive = TRUE, upload = TRUE, store_build_metadata = TRUE)"
-      - R -q -e 'library(bincraft); upload_package_index(codename = "noble", s3_endpoint = "https://s3.eu-central-003.backblazeb2.com", s3_region = "eu-central-003", s3_bucket = "devxy-rpkgs-binaries", s3_access_key_id = Sys.getenv("B2_S3_ACCESS_KEY"), s3_secret_access_key = Sys.getenv("B2_S3_SECRET_KEY"))'
+      - xvfb-run /opt/R/${R_VERSION}/bin/R -q -e "options(crayon.enabled = TRUE, Ncpus = 4, future.globals.onReference = 'error', repos = structure(c(getOption('repos'),INLA='https://inla.r-inla-download.org/R/stable'))); progressr::handlers('cli'); progressr::handlers(global = TRUE); options(future.globals.onReference = NULL); bincraft::process_cran_updates(interval = $INTERVAL, platform = 'ubuntu-2404', process_updated = TRUE, process_new = TRUE, process_removed = TRUE, s3_endpoint = 'https://s3.eu-central-003.backblazeb2.com', s3_region = 'eu-central-003', s3_bucket = 'devxy-rpkgs-binaries', s3_access_key_id = Sys.getenv('B2_S3_ACCESS_KEY'), s3_secret_access_key = Sys.getenv('B2_S3_SECRET_KEY'), metadata_db_host = 'r-binaries.devxy.io', metadata_db_name = 'build_metadata', metadata_db_table = 'single_builds', metadata_db_user = 'rpkgs', metadata_db_password = Sys.getenv('PGPASS'), metadata_db_sslmode = 'require', metadata_db_port = 15432, archive = TRUE, upload = TRUE, store_build_metadata = TRUE)"
+      - /opt/R/${R_VERSION}/bin/R -q -e 'library(bincraft); upload_package_index(codename = "noble", s3_endpoint = "https://s3.eu-central-003.backblazeb2.com", s3_region = "eu-central-003", s3_bucket = "devxy-rpkgs-binaries", s3_access_key_id = Sys.getenv("B2_S3_ACCESS_KEY"), s3_secret_access_key = Sys.getenv("B2_S3_SECRET_KEY"))'