docs: add embeddings tutorial

[azeez-1904]

Overview

Adds a tutorial for running llama-server in embedding mode and querying the OpenAI-compatible /v1/embeddings endpoint, including pooling/normalization flags and a minimal retrieval pipeline example.

Additional information

Related to #13523. Includes a Windows-specific note on OpenSSL being required for HTTPS downloads, and a PowerShell JSON-quoting gotcha, both hit firsthand while writing this. All commands and output shown were run and verified locally.

Requirements

• I have read and agree with the contributing guidelines
• AI usage disclosure: YES - used AI assistance to help draft and structure the tutorial. All commands, flags, and output shown were run and verified locally by me on my own machine.

[ggml-gh-bot]

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[azeez-1904]

Overview

Adds a tutorial for running llama-server in embedding mode and querying the OpenAI-compatible /v1/embeddings endpoint, including pooling/normalization flags and a minimal retrieval pipeline example.

Additional information

Related to #13523. Includes a Windows-specific note on OpenSSL being required for HTTPS downloads, and a PowerShell JSON-quoting gotcha, both hit firsthand while writing this. All commands and output shown were run and verified locally.

Requirements

• I have read and agree with the contributing guidelines
• AI usage disclosure: YES - used AI assistance to help draft and structure the tutorial. All commands, flags, and output shown were run and verified locally by me on my own machine.