feat: rebrand Hemmelig to paste.es for cloudhost.es

- Set Spanish as default language with ephemeral/encrypted privacy focus
- Translate all user-facing strings and legal pages to Spanish
- Replace Norwegian flag with Spanish flag in footer
- Remove Hemmelig/terces.cloud links, add cloudhost.es sponsorship
- Rewrite PrivacyPage: zero data collection, ephemeral design emphasis
- Rewrite TermsPage: Spanish law, RGPD, paste.es/CloudHost.es references
- Update PWA manifest, HTML meta tags, package.json branding
- Rename webhook headers to X-Paste-Event / X-Paste-Signature
- Update API docs title and contact to paste.es / cloudhost.es

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/bug.yml

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+name: 🐛 Bug
+description: Report an issue to help improve the project.
+labels: ["bug"]
+body:
+  - type: textarea
+    id: description
+    attributes:
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+      description: A brief description of the issue, also include what you tried and what didn't work
+    validations:
+      required: true
+  - type: textarea
+    id: screenshots
+    attributes:
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+    validations:
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+  - type: textarea
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+    attributes:
+      label: Additional information
+      description: Is there anything else we should know about this bug?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: true

.github/ISSUE_TEMPLATE/docs.yml

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+name: 📄 Documentation issue
+description: Found an issue in the documentation?
+title: "[DOCS] <description>"
+labels: ["documentation"]
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: A brief description of the issue, also include what you tried and what didn't work
+    validations:
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+    id: screenshots
+    attributes:
+      label: Screenshots
+      description: Please add screenshots if applicable
+    validations:
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+  - type: textarea
+    id: extrainfo
+    attributes:
+      label: Additional information
+      description: Is there anything else we should know about this issue?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: 💡Feature Request
+description: Have a new idea/feature? Please suggest!
+title: "[FEATURE] <description>"
+labels:
+  ["enhancement"]
+body:
+  - type: textarea
+    id: description
+    attributes:
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+    validations:
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+    id: screenshots
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+    attributes:
+      label: Additional information
+      description: Is there anything else we should know about this idea?
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/other.yml

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+name: Other
+description: Use this for any other issues. Avoid creating blank issues
+title: "[OTHER]"
+
+body:
+  - type: markdown
+    attributes:
+      value: "# Other issue"
+  - type: textarea
+    id: issuedescription
+    attributes:
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+    id: extrainfo
+    attributes:
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