feat: add aider template

[phala-agent]

Summary

• Adds a CPU-safe Aider prebuilt template under templates/prebuilt/aider.
• Runs a minimal Python HTTP verifier that installs the real aider-chat package, imports aider, and checks aider --version without provider credentials, model downloads, or GPU.
• Adds templates/icons/aider.svg from upstream aider/website/assets/logo.svg and a config entry routed through the Phala prebuilt template path.

Upstream

• Repo: https://github.com/Aider-AI/aider
• Package: aider-chat==0.86.2
• Icon source: https://raw.githubusercontent.com/Aider-AI/aider/main/aider/website/assets/logo.svg

Template files

• templates/prebuilt/aider/docker-compose.yml
• templates/prebuilt/aider/README.md
• templates/icons/aider.svg
• templates/config.json

Environment variables

• AIDER_PACKAGE_VERSION optional, default 0.86.2
• AIDER_MODEL optional for later manual Aider sessions
• OPENAI_API_KEY optional for later manual Aider sessions
• ANTHROPIC_API_KEY optional for later manual Aider sessions
• GEMINI_API_KEY optional for later manual Aider sessions
• OPENROUTER_API_KEY optional for later manual Aider sessions

Default smoke endpoints do not use provider credentials.

Validation

• python sdks/templates/validate.py passed
• git -C sdks diff --check origin/main...HEAD passed after commit
• docker compose -f sdks/templates/prebuilt/aider/docker-compose.yml config >/dev/null passed
• Static audit passed: README deployment/use/verification coverage, unique config ID, icon file exists, no literal secrets, no host bind mounts, no env_file, no external build context

Phala Cloud deployment smoke

• Profile/workspace: hermes-admin-cvm-check / h4x's projects
• Deploy command shape: phala deploy --name auto-template-test-aider-0526-223331 --compose sdks/templates/prebuilt/aider/docker-compose.yml --instance-type tdx.small --wait --no-public-logs --no-public-sysinfo --json
• CVM: f0ad031f-8ccf-4014-99f6-a0eb43ab1663
• App ID: 8a7d48542171b079a082904b0ecdca2e96ba44b0
• Container: /dstack-app-1 reached Up About a minute (healthy)
• GET /healthz returned HTTP 200 with ok=true, package_version=0.86.2, cli_version="aider 0.86.2"
• GET /demo returned HTTP 200 with ok=true
• GET /v1/models returned HTTP 200 with model aider-local-smoke and remote_model_calls=false

Cleanup

• Temporary CVM deletion returned success.
• Follow-up lookup reached deleted/not-found state.

cc @Marvin-Cypher for review.

[phala-agent]

cc @Marvin-Cypher for review.

Formal reviewer request could not be completed from this automation context, so this comment is the fallback review notification.