Add feature: turso.tech

[Copilot]

Adds a devcontainer feature for turso.tech that installs the tursodb CLI from tursodatabase/turso GitHub releases.

New files

• src/turso.tech/ — feature metadata (devcontainer-feature.json), NOTES.md, and install.sh
• test/turso.tech/test.sh — smoke test (tursodb --version)

Notable implementation details

• Archives use .tar.xz (not .tar.gz), so xz-utils is installed if missing and extraction uses tar -xJ
• Supports amd64 → x86_64 and arm64 → aarch64; other architectures exit with an error (no musl/armv7 builds are published upstream)
• Binary in the archive lives at turso_cli-${arch}-unknown-linux-gnu/tursodb; extracted directly to /usr/local/bin

# Usage after install
tursodb           # interactive SQL shell
tursodb my.db --mcp  # MCP server mode for AI assistant integration

Root README

• Added turso.tech row alphabetically between taskwarrior.org and webinstall.dev

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add feature "turso.tech"</issue_title>
<issue_description>Gh repo tursodatabase/turso</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add feature "turso.tech" #184

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