fix: set up analysis runtimes inside action

[ivanmilevtues]

Summary\n- install Java 21 inside the composite action for JDTLS\n- install .NET SDKs 8/9/10 inside the composite action for C# LSP/static analysis\n- keep setup gated by the action guard so skipped review/sync runs avoid the extra setup\n\n## Validation\n- ruby -e 'require "yaml"; YAML.load_file("action.yml")'\n- bash -n scripts/run_local.sh\n- python3 -m unittest tests.test_engine_adapter tests.test_sync_subcommands tests.test_build_cta -v\n- git diff --check

[codeboarding-review]

Architecture review · 15 components changed

graph LR
    n_Analysis_Orchestrator["Analysis Orchestrator"]
    n_Structural_Diffing_Engine["Structural Diffing Engine"]
    n_Mermaid_Visualization_Engine["Mermaid Visualization Engine"]
    n_UX_Integration_Layer["UX #amp; Integration Layer"]
    n_Analysis_Orchestrator -- "triggers incremental or full analysis" --> n_Structural_Diffing_Engine
    n_Structural_Diffing_Engine -- "provides structural diff data for rendering" --> n_Mermaid_Visualization_Engine
    n_Structural_Diffing_Engine -- "reports change status and diff summaries" --> n_UX_Integration_Layer
    n_Mermaid_Visualization_Engine -- "queries file-level changes for component mapping" --> n_Structural_Diffing_Engine
    n_Mermaid_Visualization_Engine -- "provides rendered diagrams and change counts" --> n_UX_Integration_Layer
    n_UX_Integration_Layer -- "initiates health checks and environment validat…" --> n_Analysis_Orchestrator
    n_UX_Integration_Layer -- "filters visual noise for final presentation" --> n_Mermaid_Visualization_Engine
    n_Analysis_Orchestrator -- "provides metadata for final reporting" --> n_UX_Integration_Layer
    classDef added fill:#1f883d,stroke:#0b5d23,color:#ffffff;
    classDef modified fill:#bf8700,stroke:#7d4e00,color:#ffffff;
    classDef deleted fill:#cf222e,stroke:#82071e,color:#ffffff,stroke-dasharray:5 3;
    class n_Analysis_Orchestrator,n_UX_Integration_Layer modified;
    linkStyle 2,6 stroke:#0b5d23,stroke-width:2px;
    linkStyle 0,4,5 stroke:#7d4e00,stroke-width:2px;
    linkStyle 7 stroke:#82071e,stroke-width:2px,stroke-dasharray:5 3;

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Colors indicate component changes compared to main: 🟩 Added · 🟨 Modified · 🟥 Removed

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Analysis Orchestrator : 2 files changed

• scripts/build_cta.py
• scripts/engine_adapter.py

UX & Integration Layer : 3 files changed

• scripts/diff_to_mermaid.py
• scripts/engine_adapter.py
• scripts/submit_feedback.py

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[Svilen-Stefanov]

Thank you! LGTM.