feat: centralize Psalm static analysis

.github/workflows/psalm.yml

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+# SPDX-FileCopyrightText: 2022-2024 Nextcloud GmbH and Nextcloud contributors
+# SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
+# SPDX-License-Identifier: MIT
+
+name: Static analysis
+
+on:
+  workflow_call:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: psalm-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  static-analysis:
+    runs-on: ubuntu-latest
+    name: static-psalm-analysis
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Get php version
+        id: versions
+        uses: nextcloud-libraries/nextcloud-version-matrix@cd0211ffcef1065e2020cd579e4843b8746e7a58 # v1.3.3
+
+      - name: Check minimum PHP version in psalm.xml
+        env:
+          PHP_MIN: ${{ steps.versions.outputs.php-min }}
+        run: grep "phpVersion=\"$PHP_MIN" psalm.xml
+
+      - name: Set up php${{ steps.versions.outputs.php-available }}
+        uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # 2.37.2
+        with:
+          php-version: ${{ steps.versions.outputs.php-available }}
+          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, sqlite, pdo_sqlite
+          coverage: none
+          ini-file: development
+          ini-values: disable_functions=
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+
+      - name: Remove nextcloud/ocp
+        run: composer remove nextcloud/ocp --dev --no-scripts
+
+      - name: Install composer dependencies
+        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # 4.0.0
+
+      - name: Install supported nextcloud/ocp
+        env:
+          OCP_BRANCH: ${{ steps.versions.outputs.branches-max }}
+        run: >-
+          composer require --dev
+          "nextcloud/ocp:dev-$OCP_BRANCH"
+          --ignore-platform-reqs
+          --with-dependencies
+
+      - name: Run Psalm
+        run: composer run psalm -- --threads=1 --monochrome --no-progress --output-format=github

workflow-templates/psalm.properties.json

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+{
+  "name": "Psalm static analysis",
+  "description": "Run Psalm static analysis with the PHP and Nextcloud versions supported by the app.",
+  "iconName": "octicon codescan-checkmark",
+  "categories": [
+    "PHP"
+  ],
+  "filePatterns": [
+    "^composer.json$",
+    "^psalm.xml$"
+  ]
+}

workflow-templates/psalm.properties.json.license

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+SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
+SPDX-License-Identifier: AGPL-3.0-or-later

workflow-templates/psalm.yml

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+# SPDX-FileCopyrightText: 2026 LibreCode coop and contributors
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# This workflow is published through the LibreCode organization catalog.
+# Implementation: LibreCodeCoop/github-workflows
+
+name: Static analysis
+
+on: pull_request
+
+permissions:
+  contents: read
+
+jobs:
+  psalm:
+    uses: LibreCodeCoop/github-workflows/.github/workflows/psalm.yml@bedd8421ad6c95914f10f0dc631333223d17c515