chore: remove dead code, debug logging, and fix typos

[lakshith-403]

Mechanical, no-behavior-change cleanup surfaced by a code-quality review of the repository. Pure dead-code removal, a stray debug log, and typo/naming fixes — no functional logic touched.

Python — python/inspectus/__init__.py

• Remove unused compress_series() (never called anywhere, not in __all__)
• Remove unused loop counter i in distribution()
• Simplify histogram = [dist[i] for i in range(0, 9)] → dist.tolist(), dropping the shadowed comprehension variable and the hard-coded count 9
• Fix distribution() docstring: alpha default is 0.5, not 0.6 (matches the signature)

TypeScript — ui/src/

• charts.ts — remove dead chartsEmbedTest() scaffolding (unreferenced, hard-coded empty sample)
• attention_matrix_view.ts — remove the unused attentions field and the now-unused createMatrix import
• line_grid.ts — remove a leftover console.log('click', ...) in the click handler; fix typo selectHanlder → selectHandler
• controller.ts — rename doubled-word method calcGridAttentionAttention → calcGridAttention (all 3 call sites)
• token_loss.ts — remove a large commented-out menu dead-code block referencing a removed field

Verification

• python -m py_compile passes on the changed modules
• All 5 changed .ts files parse cleanly via esbuild
• grep confirms no residual references to any removed/renamed symbol

Diff: 6 files, +8 / −76.

Note: this does not rebuild the bundled python/inspectus/static/js/charts.js artifact — that regenerates from ui/ on the normal build step.

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