Fix global.gittensory.yml's gittensor:priority label-propagation mapping (VPS)

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Context

Global's linkedIssueLabelPropagation mapping for gittensor:priority (private VPS config) sets removeOtherTypeLabels: true with no trustMaintainerAuthoredIssueForReward key. All 3 live repos instead set removeOtherTypeLabels: false + trustMaintainerAuthoredIssueForReward: true — matching the codebase's own bundled canonical example (src/config/gittensory-repo-focus-manifest.ts:~83-87), which documents priority as intentionally additive ("an issue is routinely both gittensor:feature AND gittensor:priority at once"). The functional consequence, traced in src/settings/pr-type-label.ts:163-169: an earlier exclusive match (e.g. bug) fully discards a later exclusive-mode gittensor:priority match — not merged, not applied — in exactly this routine dual-label case.

Zero live impact today (array-valued keys replace wholesale, and all 3 repos fully override the mappings array) — this is a latent bug in the fallback default that would silently and completely break priority-reward labeling for the next repo onboarded to the gate fleet without its own override, with no error surfaced anywhere.

Requirements

• Direct edit to the private dedicated-server config, not a GitHub PR.

Deliverables

• Update global.gittensory.yml's gittensor:priority mapping entry to removeOtherTypeLabels: false + trustMaintainerAuthoredIssueForReward: true, matching all 3 per-repo overrides and the bundled canonical example.

Expected Outcome

A future repo onboarded to the fleet without its own label-propagation override gets correct, additive priority-reward labeling by default instead of a silent total breakage.

Links & Resources

• Evidence: global.gittensory.yml:94-96; jsonbored__gittensory.gittensory.yml:77-80 (same shape at metagraphed:87-90, awesome-claude:53-56); src/config/gittensory-repo-focus-manifest.ts:~83-87; src/review/linked-issue-label-propagation.ts:66-74; src/selfhost/private-config.ts:165-172 (wholesale array replace)

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Part of #5270 (roadmap epic).

[linear-code]

JSO-3768

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Applied directly to global.gittensory.yml on the dedicated server, 2026-07-12 (same edit/backup as #5274). gittensor:priority mapping now sets removeOtherTypeLabels: false + trustMaintainerAuthoredIssueForReward: true, matching all 3 per-repo overrides and the bundled canonical example.