Add Microsoft 365 Copilot comparison to OneAI table

[dennypradipta]

Summary

Adds a Microsoft 365 Copilot column to the OneAI comparison table on the /oneai landing page, based on primary-source research of Microsoft 365 Copilot.

Changes

• Research: docs/research/microsoft-copilot-365.md — verified facts sourced from Microsoft docs/product terms (price structure, multi-model support, data handling, hosting).
• Locales (en + id): added columns.copilot and a copilot cell for all 11 comparison rows, plus updated pricing assumptions.
• Loader: get-oneai-comparison-rows.ts — added copilot to the OneaiComparisonRow type, RowLoader, each row, and the mapping.
• Table: oneai-comparison-table.tsx — rendered the new column header + cell.
• Tests: updated get-oneai-comparison-rows.test.ts for the new field.

Comparison verdict (from research)

Row	Copilot 365
Price (20/40 users)	$30/user add-on + M365 base (~$42+/user) → OneAI wins
One budget across providers	No (per-provider toggles only) → OneAI wins
ZDR	No (stores interaction history) → OneAI wins
On-prem / isolated	No (cloud-only SaaS) → OneAI wins
Multi-model	Yes (Microsoft/Anthropic/OpenAI) → tie
Knowledge/files/code	Yes (Word/Excel/PPT/Teams) → tie

Verification

• bunx vitest run → 61 pass, 0 fail (incl. 46 oneai tests)
• tsc --noEmit clean for changed files
• e2e Playwright failures are pre-existing config errors, unrelated to this change

[dennypradipta]