Fix stale and incorrect entries in data dictionary

[RolandKrummenacher]

Summary

Audited the FinOps toolkit data dictionary against the FOCUS 1.2 schema in src/open-data/dataset-metadata/FocusCost_1.2-preview.json and fixed 10 demonstrably wrong or stale entries. Conservative pass — only fixing existing rows that are incorrect; no structural changes and no newly added columns.

Fixes

Row	Issue
BilledCost	Pre-FOCUS-1.0 wording; stale "include the Cost Management connector" guidance; CM-dataset mapping leaked Cost Management implementation detail into a FOCUS-aligned dictionary
BillingCurrency	"Currency code for all price and cost columns" — wrong; it only applies to billing-amount columns. Pricing-amount columns use PricingCurrency
BillingProfileId / BillingProfileName	Described as covering EA or MCA — billing profiles are MCA only. Also fixed "invoices invoices" typo
CommitmentDiscountQuantity	Description was for the wrong column — copied from CommitmentDiscountType (a label). Replaced with FOCUS 1.2 wording (an amount denominated in CommitmentDiscountUnit)
EffectiveCost	Loose "BilledCost spread across the term"; CM-dataset mapping removed for the same reason as BilledCost
ListUnitPrice	Stale OnDemandUnitPrice reference (renamed to ContractedUnitPrice in v0.4)
PricingQuantity	Stale UsageQuantity reference (renamed to ConsumedQuantity in v0.4)
PricingUnitDescription	Grammar typo ("type is used by"); added FOCUS-aligned wording about pricing block size
TotalSavingsRunningTotal	Was describing DiscountCostSavings (an alias) instead of TotalSavings

Also bumped ms.date to 04/29/2026.

Out of scope (potential follow-ups)

• ~10 FOCUS 1.2 columns missing from the dictionary entirely (x_AccountId, x_BilledUnitPrice, x_ContractedCostInUsd, x_ServicePeriodStart/End, x_SkuDescription, x_SkuIsCreditEligible, x_SkuRegion)
• IsCreditEligible may have been renamed to x_SkuIsCreditEligible in FOCUS 1.2 — needs hubs-output verification
• SkuServiceFamily "as of February 2023, there's a bug for EA where it's always Compute" — three years stale, worth re-verifying
• InvoiceIssuerName "Only supported for CSP accounts" — likely no longer true under FOCUS 1.2
• Tags "Microsoft Cost Management has a bug where it's missing the outer braces" — possibly stale

Pre-existing alignment warning on the ServiceModel row (line 167) was not introduced by this PR and is left for a separate cleanup.

Test plan

• Render the page locally / on a Learn preview and verify table layout is unchanged
• Spot-check the corrected rows against FocusCost_1.2-preview.json and the FOCUS 1.2 spec
• Confirm the page hasn't regressed in the docs-mirror pipeline (MicrosoftDocs/partner-center-pr)

Note: the live learn.microsoft.com page won't refresh until the docs mirror runs.

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