🐛 fix(ci): correggi URL istanza, token e struttura YAML nei workflow condivisi

- Sostituito URL hardcoded con ${{ gitea.server_url }} (portabilità)
- Sostituito ${{ secrets.GITEA_TOKEN }} con ${{ gitea.token }} (token automatico)
- Aggiunto env SERVER_URL/REPOSITORY per evitare espressioni inline nei curl
- Fix dependency-check: rimosso BODY multi-riga (bug YAML run:|) → printf + /tmp/body.md
- Fix auto-release: changelog su /tmp/changelog.txt (evita collisione workspace)
- Fix branch-cleanup: encoding branch via variabile (sicurezza shell)

.gitea/workflows/dependency-check.yml

@@ -53,7 +53,9 @@ jobs:
       - name: Open issue if problems found
         if: steps.audit.outputs.vulnerabilities != '0' || steps.outdated.outputs.count != '0'
         env:
-          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+          GITEA_TOKEN: ${{ gitea.token }}
+          SERVER_URL: ${{ gitea.server_url }}
+          REPOSITORY: ${{ gitea.repository }}
         run: |
           VULNS="${{ steps.audit.outputs.vulnerabilities }}"
           OUTDATED="${{ steps.outdated.outputs.count }}"
@@ -62,25 +64,14 @@ jobs:
           VULN_LIST=$(jq -r '.vulnerabilities | to_entries[] | "- \(.key): \(.value.severity)"' audit.json 2>/dev/null | head -20 || echo "N/A")
           OUTDATED_LIST=$(jq -r 'to_entries[] | "- \(.key): \(.value.current) → \(.value.latest)"' outdated.json 2>/dev/null | head -20 || echo "N/A")
 
-          BODY="## Dependency Check — $DATE
-
-### Vulnerabilità (high/critical): $VULNS
-
-\`\`\`
-$VULN_LIST
-\`\`\`
-
-### Pacchetti obsoleti: $OUTDATED
-
-\`\`\`
-$OUTDATED_LIST
-\`\`\`"
+          printf '## Dependency Check — %s\n\n### Vulnerabilità (high/critical): %s\n\n```\n%s\n```\n\n### Pacchetti obsoleti: %s\n\n```\n%s\n```\n' \
+            "$DATE" "$VULNS" "$VULN_LIST" "$OUTDATED" "$OUTDATED_LIST" > /tmp/body.md
 
           curl -s -X POST \
             -H "Content-Type: application/json" \
             -H "Authorization: token $GITEA_TOKEN" \
-            "https://gitea.pzetatouch.it/api/v1/repos/${{ gitea.repository }}/issues" \
+            "$SERVER_URL/api/v1/repos/$REPOSITORY/issues" \
             -d "{
               \"title\": \"[$DATE] Dipendenze: $VULNS vulnerabilità, $OUTDATED obsoleti\",
-              \"body\": $(echo "$BODY" | jq -Rs .)
+              \"body\": $(jq -Rs . /tmp/body.md)
             }"