chore(alpine): drop the deprecated Alpine 3.22 slot (#213)

## Why

Alpine 3.22 is deprecated and should be dropped.

It was never a published slot to begin with.
`local.rpkgs_slots` in `cdn.tf` enumerates eight distros and alpine322 is not one of them, so `UNION_SLOTS` never gated per-minor rewriting for it.
The website's `DistroId` union lists the same eight.
Every request to the slot therefore fell through to the flat index, which holds R 4.5 builds.

## Evidence

The fleet-wide routing verification (pipeline 12591, `verify_routing=all`) measured this end to end.

Across all 16 published slots, both architectures, three R minors and both contractual URL forms: **1056 of 1056 install-and-load checks passed.**

Every failure in the run was alpine322, identical on amd64 and arm64:

```
amd64/alpine322 R 4.4 via arch|generic|flat:  8 of 11
amd64/alpine322 R 4.6 via arch|generic|flat: 10 of 11
arm64/alpine322 R 4.4 via arch|generic|flat:  8 of 11
arm64/alpine322 R 4.6 via arch|generic|flat: 10 of 11
```

The tell is that all three forms agree.
On a routed slot `arch` and `generic` diverge from `flat`, because that divergence *is* the routing.
On alpine322 there is nothing to diverge from.
R 4.5 clients were 11 of 11 on every form, because flat happens to be what they need.

The data itself is not broken, only unreachable.
`alpine322/contrib/4.4/data.table_1.18.6.1.tar.gz` is genuinely `Built: R 4.4.3` and the 4.6 object is `Built: R 4.6.0`.
Correct objects, correct per-minor indexes, never served.

## What changed

- alpine-322 matrix rows and dropdown options removed from the 12 pipelines that carried them, so `=all` no longer fans out to a slot nobody can reach.
- `3.22` removed from the `OS_VERSION` dropdowns in `build-all-versions.yaml` and `repair-built-stamp.yaml`; the latter's default moves to `3.23`.
- Stale `3.22` examples updated in `local/packages-to-build.R`.

`crow lint .crow/` reports all 18 configs valid.

## Also done outside this diff

The six alpine-322 cron jobs are deleted from the Crow server, since a cron whose matrix row is gone keeps firing against nothing:

```
5   process-cran-updates-alpine-322-amd64     0 5/8 * * *
6   process-cran-updates-alpine-322-arm64     30 5/8 * * *
68  weekly-audit-missing-alpine-322-amd64     20 0 * * 0
69  weekly-audit-missing-alpine-322-arm64     30 0 * * 0
82  weekly-rebuild-missing-alpine-322-amd64   0 4 * * 0
83  weekly-rebuild-missing-alpine-322-arm64   10 4 * * 0
```

They are listed here so they can be recreated if this is ever reversed.

## Not done

The published objects and indexes under `amd64/alpine322` and `arm64/alpine322` are left in the bucket.
Deleting them is a separate decision, and nothing routes to them in the meantime.

Reviewed-on: #213

.crow/archive-missed-packages.yaml

@@ -28,10 +28,6 @@ matrix:
       ARCH: amd64
     - CODENAME: redhat-10
       ARCH: arm64
-    - CODENAME: alpine322
-      ARCH: amd64
-    - CODENAME: alpine322
-      ARCH: arm64
     - CODENAME: alpine323
       ARCH: amd64
     - CODENAME: alpine323

.crow/backfill-flat-safety.yaml

@@ -25,8 +25,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -59,14 +57,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/build-all-versions.yaml

@@ -24,7 +24,6 @@ variables:
   OS_VERSION:
     description: 'OS image tag. Must match OS (alpine: 3.24; redhat: 8/9/10; ubuntu: jammy/noble).'
     options:
-      - '3.22'
       - '3.23'
       - '3.24'
       - '8'

.crow/process-updates.yaml

@@ -15,8 +15,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -48,18 +46,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      OS_ID: alpine322
-      PROCESS_NEW: 'FALSE'
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.23
-      OS_ID: alpine322
-      PROCESS_NEW: 'FALSE'
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/prune-stale-flat-binaries.yaml

@@ -36,8 +36,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -76,14 +74,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      CODENAME: alpine322
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      CODENAME: alpine322
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       CODENAME: alpine323

.crow/rebuild-abi-gap.yaml

@@ -39,8 +39,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -80,14 +78,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/reindex.yaml

@@ -24,8 +24,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -55,14 +53,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/repair-built-stamp.yaml

@@ -16,7 +16,7 @@
 # pipeline here gates on a variable named after itself for exactly that reason.
 #
 #   crow pipeline create --branch main \
-#     --var repair_built_stamp=arm64 --var OS=alpine --var OS_VERSION=3.22 \
+#     --var repair_built_stamp=arm64 --var OS=alpine --var OS_VERSION=3.23 \
 #     --var R_VERSION=4.5.3 --var dry_run=true devxy/build-cran-binaries
 variables:
   # Gates this pipeline. A manual pipeline creation instantiates every file in
@@ -37,9 +37,8 @@ variables:
       - ubuntu
     default: alpine
   OS_VERSION:
-    description: 'OS image tag. Must match OS (alpine: 3.22/3.23/3.24; redhat: 8/9/10; ubuntu: jammy/noble/resolute).'
+    description: 'OS image tag. Must match OS (alpine: 3.23/3.24; redhat: 8/9/10; ubuntu: jammy/noble/resolute).'
     options:
-      - '3.22'
       - '3.23'
       - '3.24'
       - '8'
@@ -48,7 +47,7 @@ variables:
       - 'jammy'
       - 'noble'
       - 'resolute'
-    default: '3.22'
+    default: '3.23'
   R_VERSION:
     description: 'R version whose stamp the slot should advertise.'
     options:

.crow/repair-unsafe-flat-objects.yaml

@@ -22,8 +22,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -53,14 +51,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/trial-build-registry.yaml

@@ -38,14 +38,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/verify-repo-routing.yaml

@@ -18,8 +18,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -49,14 +47,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/weekly-audit-missing.yaml

@@ -15,8 +15,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -48,14 +46,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/weekly-rebuild-missing.yaml

@@ -25,8 +25,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -58,42 +56,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      SPLIT_INTO: 3
-      SPLIT_INDEX: 1
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      SPLIT_INTO: 3
-      SPLIT_INDEX: 2
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      SPLIT_INTO: 3
-      SPLIT_INDEX: 3
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      SPLIT_INTO: 3
-      SPLIT_INDEX: 1
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      SPLIT_INTO: 3
-      SPLIT_INDEX: 2
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-      SPLIT_INTO: 3
-      SPLIT_INDEX: 3
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

.crow/weekly-rebuild-reindex.yaml

@@ -20,8 +20,6 @@ variables:
     options:
       - none
       - all
-      - alpine-322-amd64
-      - alpine-322-arm64
       - alpine-323-amd64
       - alpine-323-arm64
       - alpine-324-amd64
@@ -58,14 +56,6 @@ labels:
 
 matrix:
   include:
-    - OS: alpine-322
-      ARCH: amd64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
-    - OS: alpine-322
-      ARCH: arm64
-      R_VERSION: 4.5.3
-      IMG: alpine:3.22
     - OS: alpine-323
       ARCH: amd64
       R_VERSION: 4.5.3

local/packages-to-build.R

@@ -12,11 +12,11 @@ library(progressr, quietly = TRUE)
 suppressPackageStartupMessages(library(data.table))
 
 # Sys.setenv("OS" = "alpine")
-# Sys.setenv("OS_VERSION" = "3.22")
+# Sys.setenv("OS_VERSION" = "3.23")
 # Sys.setenv("ARCH" = "arm64")
 
 arch <- Sys.getenv("ARCH")
-# target: alpine-322, ubuntu-2404, redhat-9, etc.
+# target: alpine-323, ubuntu-2404, redhat-9, etc.
 platform <- paste(
   Sys.getenv("OS"),
   gsub("[.]", "", Sys.getenv("OS_VERSION")),