Initial portal commit: landing + 9 AI-powered apps

Apps:
- dwg-rooms: extract room numbers from DWG/DXF
- dwg-counting: count symbols in PDF drawings (OpenCV template matching)
- contract-check: review PDF contracts against a checklist (Claude vision + Tesseract OCR fallback)
- email-drafter: bullet notes → polished Czech/English business emails
- invoice-extractor: PDF/image invoice → structured data → Excel
- translator: Czech-first translator across 19 languages with tone control
- vv-check: find inconsistent unit prices across VV sheets in one workbook
- vv-compare: diff original vs new VV files (changes / added / removed)
- feature-request: portal users submit ideas + sample files

Infrastructure:
- LiteLLM gateway with per-app virtual keys + budgets
- Langfuse observability
- Geist font, shared theme, cross-subdomain back link + theme sync via cookie/URL
- Caddy reverse proxy on *.klas.chat

dify-workflows/shrnuti-dokumentu.yml

@@ -0,0 +1,170 @@
+app:
+  description: 'Vlož text dokumentu, získáš stručné shrnutí v 5 bodech.'
+  icon: 📄
+  icon_background: '#E0F2FE'
+  mode: workflow
+  name: Shrnutí dokumentu
+  use_icon_as_answer_icon: false
+kind: app
+version: 0.4.0
+workflow:
+  conversation_variables: []
+  environment_variables: []
+  features:
+    file_upload:
+      enabled: false
+    opening_statement: ''
+    retriever_resource:
+      enabled: false
+    sensitive_word_avoidance:
+      enabled: false
+    speech_to_text:
+      enabled: false
+    suggested_questions: []
+    suggested_questions_after_answer:
+      enabled: false
+    text_to_speech:
+      enabled: false
+      language: ''
+      voice: ''
+  graph:
+    edges:
+    - data:
+        isInIteration: false
+        isInLoop: false
+        sourceType: start
+        targetType: llm
+      id: start-to-llm
+      source: 'start_node'
+      sourceHandle: source
+      target: 'llm_node'
+      targetHandle: target
+      type: custom
+      zIndex: 0
+    - data:
+        isInIteration: false
+        isInLoop: false
+        sourceType: llm
+        targetType: end
+      id: llm-to-end
+      source: 'llm_node'
+      sourceHandle: source
+      target: 'end_node'
+      targetHandle: target
+      type: custom
+      zIndex: 0
+    nodes:
+    - data:
+        desc: ''
+        selected: false
+        title: Vstup
+        type: start
+        variables:
+        - label: Text dokumentu
+          max_length: 50000
+          options: []
+          required: true
+          type: paragraph
+          variable: dokument
+        - label: Styl shrnutí
+          max_length: 100
+          options:
+          - Stručné body (do 5)
+          - Detailní souhrn (1 odstavec)
+          - TL;DR (1 věta)
+          required: true
+          type: select
+          variable: styl
+      height: 130
+      id: 'start_node'
+      position:
+        x: 30
+        y: 200
+      positionAbsolute:
+        x: 30
+        y: 200
+      selected: false
+      sourcePosition: right
+      targetPosition: left
+      type: custom
+      width: 244
+    - data:
+        context:
+          enabled: false
+          variable_selector: []
+        desc: ''
+        model:
+          completion_params:
+            temperature: 0.3
+          mode: chat
+          name: gpt-5-mini
+          provider: langgenius/openai_api_compatible/openai_api_compatible
+        prompt_template:
+        - id: sys-prompt
+          role: system
+          text: |-
+            Jsi asistent, který vytváří stručná česká shrnutí.
+
+            Pravidla:
+            - Odpovídej VÝHRADNĚ česky.
+            - Drž se faktů z poskytnutého textu, nevymýšlej.
+            - Zachovej hlavní tezi, klíčová čísla, jména a termíny.
+            - Pokud je text příliš krátký na shrnutí, řekni to.
+
+            Styl výstupu zvolí uživatel — řiď se přesně tím, co vybral.
+        - id: user-prompt
+          role: user
+          text: |-
+            Styl: {{#start_node.styl#}}
+
+            Text k shrnutí:
+            ---
+            {{#start_node.dokument#}}
+            ---
+        selected: false
+        title: Shrnutí (LLM)
+        type: llm
+        variables: []
+        vision:
+          enabled: false
+      height: 130
+      id: 'llm_node'
+      position:
+        x: 350
+        y: 200
+      positionAbsolute:
+        x: 350
+        y: 200
+      selected: false
+      sourcePosition: right
+      targetPosition: left
+      type: custom
+      width: 244
+    - data:
+        desc: ''
+        outputs:
+        - value_selector:
+          - 'llm_node'
+          - text
+          value_type: string
+          variable: shrnuti
+        selected: false
+        title: Výstup
+        type: end
+      height: 90
+      id: 'end_node'
+      position:
+        x: 670
+        y: 200
+      positionAbsolute:
+        x: 670
+        y: 200
+      selected: false
+      sourcePosition: right
+      targetPosition: left
+      type: custom
+      width: 244
+    viewport:
+      x: 0
+      y: 0
+      zoom: 0.8