chore(deps): update kotlin to v2.4.0

Age came back `unknown` for every dependency after #98. That's the `internalChecksFilter: "none"` from that PR doing what it says on the tin — and rather more.

### Why

`lib/workers/repository/process/lookup/filter-checks.ts` short-circuits on `none`:

```js
if (internalChecksFilter === 'none') {
  release = sortedReleases.pop();     // returns here
} else {
  for (let candidateRelease of sortedReleases.reverse()) {
    ...
    const updatedCandidateRelease = await postprocessRelease(...)
```

`postprocessRelease` is the only caller that fetches a Maven artifact's `Last-Modified` header (`lib/modules/datasource/maven/index.ts:222`), so skipping the loop leaves `releaseTimestamp` unset. That empties the Age column — but it also silently voids `minimumReleaseAge` and the `renovate/stability-days` check, since both compare against that same timestamp. The cooling-off tiers were decorative.

### Fix

`flexible` keeps the intent — still prefers a version that has cleared its window, but opens the PR at the newest candidate when none has — while running the loop that populates the timestamps.

Verified with a local `--platform=local --dry-run=full`:

| dependency | new version | age |
| --- | --- | --- |
| `androidx.compose:compose-bom` | 2026.06.01 | 24 d |
| `androidx.compose.material3:material3` | 1.5.0-alpha24 | 10 d |
| `androidx.work:work-runtime-ktx` | 2.11.2 | 122 d |
| `com.android.application` (AGP) | 9.3.1 | 2 d |
| `gradle` | 9.6.1 | 29 d |

Only `ghcr.io/renovatebot/renovate` stays unknown, because the docker registry serves no timestamps at all — the run marks all 176 of its tags pending for that reason, and `flexible` is what still lets that PR through.

`Pending` rejoins the table: under a flexible filter it names the newer version being held back, rather than leaving it invisible.

### Also

Migrates the Gitea workflow manager off the deprecated `fileMatch`. Renovate's config migration was rewriting it to `managerFilePatterns` (delimited regex) on every run and warning about it; the dry run confirms the manager still picks up `.gitea/workflows` afterwards.

Validated with `renovate-config-validator` against the pinned 43.232.0.

Reviewed-on: #100

.gitea/workflows/release.yaml

@@ -412,20 +412,31 @@ jobs:
               "prerelease": False,
           }))
           PY
-          # Upsert (re-run safe). POST also creates the tag at target_commitish
-          # if the push mirror hasn't synced it yet.
-          ID=$(curl -s -H "Authorization: token $TOKEN" "$API/releases/tags/$TAG" | jq -r '.id // empty')
-          if [ -n "$ID" ]; then
+          # Create (or update) the release. Codeberg 500s on a POST/GET against a
+          # tag it has only just received — the release request outruns the
+          # indexing of the ref we pushed a moment ago — so a single attempt kept
+          # failing and skipping the mirror even though the very same call
+          # succeeds seconds later. Retry with backoff, and PATCH in place if a
+          # release already exists (re-run safe). A 5xx body still exits curl 0,
+          # so the loop, not `set -e`, controls the flow.
+          ID=""
+          for attempt in 1 2 3 4 5 6; do
+            EXIST=$(curl -s -H "Authorization: token $TOKEN" "$API/releases/tags/$TAG" | jq -r '.id // empty' 2>/dev/null || true)
+            if [ -n "$EXIST" ]; then
               curl -s -o /dev/null -w "release PATCH HTTP %{http_code}\n" -X PATCH \
                 -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
-              -d @cb-payload.json "$API/releases/$ID"
-          else
-            curl -s -o cb-response.json -w "release POST HTTP %{http_code}\n" -X POST \
-              -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
-              -d @cb-payload.json "$API/releases"
-            ID=$(jq -r '.id // empty' cb-response.json 2>/dev/null || true)
+                -d @cb-payload.json "$API/releases/$EXIST"
+              ID="$EXIST"; break
             fi
-          if [ -z "$ID" ]; then echo "Could not resolve Codeberg release id." >&2; exit 1; fi
+            CODE=$(curl -s -o cb-response.json -w "%{http_code}" -X POST \
+              -H "Authorization: token $TOKEN" -H "Content-Type: application/json" \
+              -d @cb-payload.json "$API/releases")
+            echo "release POST attempt $attempt HTTP $CODE"
+            ID=$(jq -r '.id // empty' cb-response.json 2>/dev/null || true)
+            [ -n "$ID" ] && break
+            sleep $((attempt * 10))
+          done
+          if [ -z "$ID" ]; then echo "Could not resolve Codeberg release id after retries." >&2; exit 1; fi
 
           # Attach APK + checksum, replacing any prior asset of the same name.
           for A in "$ASSET_APK" "$ASSET_SUM"; do

.gitea/workflows/renovate.yml

@@ -39,4 +39,9 @@ jobs:
           RENOVATE_REPOSITORIES: '["makiolaj/calendula"]'
           # Commits/PRs authored as the bot, not a real maintainer.
           RENOVATE_GIT_AUTHOR: 'Renovate Bot <renovate@jeanlucmakiola.de>'
+          # Read-only github.com PAT (no scopes needed). We run on Gitea, but
+          # nearly every dependency is *released* on GitHub — without this,
+          # changelog/release-note lookups hit the 60/h anonymous rate limit
+          # and PRs arrive with an empty "Release Notes" section.
+          RENOVATE_GITHUB_COM_TOKEN: ${{ secrets.GITHUB_COM_TOKEN }}
           LOG_LEVEL: info

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 agp = "9.2.1"
-kotlin = "2.3.21"
+kotlin = "2.4.0"
 ksp = "2.3.9"
 hilt = "2.59.2"
 coreKtx = "1.19.0"

renovate.json5

@@ -7,6 +7,23 @@
     ":semanticCommits",
   ],
 
+  // `config:recommended` brings in mergeConfidence:age-confidence-badges, whose
+  // Age column is a Mend badge. Mend's Merge Confidence index only covers Maven
+  // Central: org.jetbrains.kotlin, junit, truth, turbine et al resolve, but
+  // every androidx/compose artifact lives on Google's Maven repo and comes back
+  // as a grey UNKNOWN — i.e. most of this project. Renovate already knows the
+  // real answer, since it derives release timestamps itself for the
+  // minimumReleaseAge rules below (Google Maven serves `last-modified` on its
+  // POMs), so take the age from there and leave Mend to the Confidence column,
+  // which still carries signal for the Maven Central half.
+  prBodyDefinitions: {
+    Age: "{{#if releaseTimestamp}}{{{newVersionAgeInDays}}} d{{else}}unknown{{/if}}",
+  },
+  // Default heading links to the Merge Confidence docs; this column is ours now.
+  prBodyHeadingDefinitions: {
+    Age: "Age",
+  },
+
   // No automerge: a dependency bump goes through the same review (and, for
   // anything touching the build, the same on-device check) as a feature
   // before it can ride a release — see docs/RELEASING.md and the
@@ -15,6 +32,22 @@
 
   // One reviewable surface; the dashboard issue lists everything pending.
   dependencyDashboard: true,
+
+  // The cooling-off periods below are advisory, not a gate. "flexible" still
+  // prefers a version that has cleared its window, but when every candidate is
+  // too young it opens the PR at the newest one anyway, so merging early stays
+  // a judgement call. (The default, "strict", would suppress the PR entirely
+  // until a release aged in.) A still-young branch carries a yellow
+  // `renovate/stability-days` check so it's visible which side of the line
+  // it's on; with automerge off, nothing acts on that check by itself.
+  //
+  // NOT "none": that short-circuits the candidate loop in filter-checks.ts, and
+  // that loop is what calls postprocessRelease — the only thing that fetches a
+  // Maven artifact's Last-Modified header. Skipping it leaves releaseTimestamp
+  // unset, which empties the Age column and quietly makes minimumReleaseAge and
+  // the stability check no-ops, since both need that timestamp to compare.
+  internalChecksFilter: "flexible",
+
   labels: ["dependencies"],
   prConcurrentLimit: 5,
   prHourlyLimit: 0,
@@ -25,11 +58,28 @@
 
   // Gitea Actions workflows live under .gitea/workflows, not .github — extend
   // the github-actions manager (same syntax) to watch them too.
+  // `fileMatch` is deprecated; the replacement takes the regex delimited, and
+  // Renovate's config migration was already rewriting this on every run.
   "github-actions": {
-    fileMatch: ["^\\.gitea/workflows/[^/]+\\.ya?ml$"],
+    managerFilePatterns: ["/^\\.gitea/workflows/[^/]+\\.ya?ml$/"],
   },
 
   packageRules: [
+    // Cooling-off period, scaled by blast radius: how long a release should
+    // have been out (and un-yanked, un-hotfixed) before it's considered
+    // settled. Advisory only — see `internalChecksFilter` above.
+    {
+      matchUpdateTypes: ["major"],
+      minimumReleaseAge: "30 days",
+    },
+    {
+      matchUpdateTypes: ["minor"],
+      minimumReleaseAge: "20 days",
+    },
+    {
+      matchUpdateTypes: ["patch", "digest", "pin", "rollback"],
+      minimumReleaseAge: "10 days",
+    },
     // material3 is deliberately pinned to the 1.5 *alpha* line for the
     // Expressive APIs (see gradle/libs.versions.toml). Follow the alpha train
     // but keep it in its own PR, reviewed in isolation; revisit the pin when
@@ -52,5 +102,18 @@
       ],
       groupName: "test dependencies",
     },
+    // Last word on the PR table. The merge-confidence preset sets prBodyColumns
+    // from inside a packageRule of its own, and only for the datasources Mend
+    // supports — so a plain top-level prBodyColumns would lose to it for maven
+    // deps, and the Gradle wrapper / Actions / container bumps would keep the
+    // default columns and show no age at all. A rule declared after it wins,
+    // and gives every PR the same table.
+    // "Pending" earns its place under a flexible filter: when the bump lands on
+    // a version that has cleared its window but a newer one hasn't, that newer
+    // version is named here rather than silently withheld.
+    {
+      matchPackageNames: ["*"],
+      prBodyColumns: ["Package", "Type", "Change", "Age", "Pending", "Confidence"],
+    },
   ],
 }