[P3][chore][docs] Post-#1776 cleanup: restore third-party pricing links, reconcile milestone intent in internal .md #1777

Non-urgent cleanup after #1776 / #1764 merged. Nothing here blocks anything; grouping so it does not get lost as scattered one-liners.

1. Third-party pricing links were degraded (5 occurrences)

While removing links to a Data Boar pricing page, links to Bitwarden's own pricing page were also stripped — those are a third party's plans, unrelated to our commercial posture. The surrounding text still tells the reader to "verify current plans", but now sends them to the site root instead of the plans page.

• docs/ops/OPERATOR_SECRETS_BITWARDEN.md — 3 occurrences of https://bitwarden.com/

• docs/ops/OPERATOR_SECRETS_BITWARDEN.pt_BR.md — 2 occurrences

• Restore https://bitwarden.com/pricing/ where the sentence is about plans/limits/billing owner

• Leave generic bitwarden.com links where the sentence is not about plans

Rule to record: "no public pricing link" means no Data Boar pricing page. It does not apply to third-party vendor documentation.

2. Reconcile milestone intent between GitHub and internal .md

Milestones were revised (several items moved to v1.8.1), but the internal markdown that mirrors queue intent should be verified to match, not just the GitHub tags.

• docs/ops/ISSUE_QUEUE_SEQUENCING_MAP.md reflects current milestone distribution
• docs/plans/PLANS_TODO.md rows do not point at items re-milestoned away from v1.8.0
• Where they disagree, GitHub is the source of truth for milestone; the .md is updated to match

3. Flag only — issues delivered but still open

Several v1.8.0 docs issues have their deliverable merged into main while the issue remains open, because PRs used Refs rather than a closing keyword. This is a real source of confusion: a later reader sees an open issue and re-executes work that is already shipped (this is how a stale premise reached a PR earlier).

Delivered and verifiable in main: #554, #556, #557, #561, #627, #631, #639, plus #610 (delivered in rescoped form via #1776 — canonical ladder in docs/SUBSCRIPTION_TIERS.md, no public pricing page).

• Operator reviews and closes the ones considered satisfied

Do not close these automatically as part of this chore — listing for operator decision only.

Out of scope

• [P2] docs(commercial): criar channel_partner_economics.md — modelo de divisão de receita para revendedores #616 / [P2] docs(commercial): criar pricing_validation_questionnaire.md — roteiro de entrevista para prospects #617 / [P2] docs(commercial): criar trial_to_paid_conversion_playbook.md — playbook de conversão trial→paid #618 — blocked on refreshing their private source document; see comments on each. Do not execute as written.
• [1.8.x][dsar] Enriquecer DSAR export: atestação criptográfica de deleção (tombstone Ed25519 verificável) #1061 — ownership re-target (Squirrel / Tortoise); tracked in that issue.