Render agent-style TeX delimiters as math

[richwomanbtc]

Summary

• normalize agent-style \(...\) and standalone \[...\] delimiters into the enriched renderer's supported math syntax
• keep code, links, URLs, escaped delimiters, incomplete streaming input, and existing dollar math unchanged
• render math inside Markdown table cells while preserving horizontal scrolling and column alignment

Root cause

The enriched Markdown renderer already enables MD4C's LaTeX math extension, but that parser recognizes $...$ and $$...$$, while coding agents commonly emit \(...\) and \[...\]. Those delimiters therefore remained literal. Tables also use the legacy block renderer, so math cells needed an explicit path into the enriched renderer.

Validation

• 36/36 focused math and table tests passed on this math-only branch
• git diff --check upstream/dev...agent/render-agent-tex-math passed
• UI typecheck passed earlier on the original clean validation commit containing these exact math files
• the isolated math-only typecheck rerun did not reach the UI compiler because the temporary worktree's workspace-package prebuild could not resolve its symlinked zod dependency

Draft status

iPhone live rendering is not yet verified. The local development client was installed and reached the native bundle path, but the shared QA server could not safely complete the first Metro bundle under its memory constraints. This remains an explicit live-QA gap rather than a passing result.

Fixes #257
Related: slopus/happy#1629

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Note

Render agent-style TeX math delimiters (\(...\) and \[...\]) in markdown

• Adds normalizeEnrichedMarkdownMathDelimiters to convert Codex-style \(...\)/\[...\] delimiters to $/$$ before passing markdown to the enriched renderer, skipping protected regions like code spans, links, and URLs.
• Table cells now conditionally render via EnrichedMarkdownTextAdapter (using the new RenderTableCellContent helper) when math is detected, falling back to plain Text otherwise.
• EnrichedMarkdownTextAdapter gains a fillContainer prop to suppress full-width stretching in table cell contexts, and math/paragraph alignment now respects the incoming textStyle.textAlign.
• Behavioral Change: table cells containing math are now rendered by the enriched markdown pipeline instead of plain text, which changes their visual appearance and adds a dependency on the profile prop in MarkdownBlockView.

^{Macroscope summarized f63eb67.}

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