fix(docs): correct enterprise distribution model — binary/Docker, not source clone

[beonde]

Fix: Enterprise distribution model in docs

The docs incorrectly instructed enterprise customers to clone the capiscio-server repo and build from source. CapiscIO Server and UI are proprietary — they are distributed as:

• Closed-source binary (server)
• Compiled JavaScript web assets (UI)
• Pre-configured Docker containers

Source code is never shipped to customers.

Changes

docs/reference/server/index.md — Quick Start section

• Replaced git clone + make run with Docker run and binary execution examples

docs/getting-started/complete-workflow.md — Part 3: Register with Server

• Replaced git clone + docker-compose up with just docker-compose up (using provided compose file)

docs/reference/server/deployment.md — Deployment Guide

• Removed "Go 1.23+ (for building from source)" prerequisite
• Replaced "Building from Source" section with "Running the Binary" section
• Explicitly states: "Source code is not shipped"

Verification

• mkdocs build passes cleanly

[github-actions]

✅ Documentation Build Successful

The documentation build completed successfully and passed validation checks.

• ✅ Build completed without errors
• ✅ Critical files present (index.html, sitemap.xml, robots.txt)
• ✅ Link validation completed

This PR will deploy to dev-docs.capisc.io when merged to main.