feat: migrate site to inkssg

[lucasnevespereira]

Summary

Replaces the hand-rolled main.go (210 lines + custom config + 3 themes + minify) with the inkssg library. The site now uses inkssg's embedded minimal theme — same look, less surface area.

Changes

• main.go — was 210 lines, now 12. Just calls inkssg.Build(".").
• ink.yaml — replaces config.yaml. Same fields, inkssg names (picture → avatar, theme → default_theme).
• pages/index/content.md — moved from src/content/index.md with frontmatter added.
• Makefile — make site runs go run main.go, then carries over snowz.html + snowz/ into public/.
• assets/img/ — avatars moved here so inkssg copies them through.
• go.mod — only requires github.com/snowztech/inkssg. Dropped tdewolff/minify, goldmark, yaml.v2 (all transitive now).
• Deleted: src/, config.yaml, root index.html, assets/css/, assets/js/.

Snowz handling (stop-gap)

snowz.html and snowz/ are still custom HTML. Makefile copies them into public/ after the inkssg build. Plan is to migrate snowz to its own repo using inkssg's new bio theme later (see snowztech/inkssg#3).

Deployment — needs decision

public/ is currently untracked. Two options:

A) Commit public/, point Pages at /public. Simpler, but commits build output.
B) GH Actions deploy workflow. Cleaner — never commit build artifacts. Requires a workflow + flipping Pages source to "GitHub Actions".

This PR doesn't pick yet. Both are easy to add as a follow-up commit.

Test plan

• make site builds locally without error
• Output: public/index.html + public/snowz.html + assets + theme files
• Visual: render matches the current live site
• Pick A or B, configure GH Pages, verify lucasnp.dev still serves correctly after merge
• lucasnp.dev/snowz still loads (carry-over copy)