fix(shortcodes): fix markdown indented codeblock rendering and shortcode HTML structure

[kascit]

Root Cause & Fix

• Root Cause:

  1. Shortcode templates in templates/shortcodes/ had lines with $\ge 4$ spaces of indentation or multi-line opening tags with standalone > at the beginning of a line.
  2. When Zola expands shortcodes inside Markdown documents before Markdown parsing, CommonMark rules treat $\ge 4$ leading spaces as Indented Code Blocks (<pre><code>) and standalone > as Blockquotes (<blockquote>), causing raw HTML to be escaped as text or wrapped in code blocks.
  3. Shortcodes generated multiple empty lines, closing HTML parent blocks early.

• Solution:

  • Added whitespace suppression ({%- ... -%}) to all 31 shortcode templates.
  • Normalized all opening HTML tags to complete on a single line.
  • Eliminated $\ge 4$ spaces indentation from all shortcode outputs and raw HTML blocks in content/.
  • Verified all pages (/projects/, /links/, /about/, etc.) render clean, valid HTML with no escaped tags or code blocks.

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