fix: update bitkit core

[ovitrif]

Description

This PR updates Bitkit Core to v0.1.75 for LNURL-pay payment handling.

Linked Issues/Tasks

N/A

Screenshot / Video

N/A

QA Notes

Manual Tests

N/A

Automated Checks

• xcodebuild -resolvePackageDependencies -project Bitkit.xcodeproj -scheme Bitkit

[greptile-apps]

Greptile Summary

This PR bumps the bitkit-core Swift package dependency from v0.1.66 to v0.1.75 to pick up improved LNURL-pay payment handling, and adds a matching changelog fragment.

• project.pbxproj updated the exactVersion requirement for bitkit-core from 0.1.66 → 0.1.75.
• Package.resolved updated the pinned revision hash and version string consistently with the requirement change.

Confidence Score: 5/5

Safe to merge — a straightforward dependency pin bump with no logic changes in the iOS app itself.

The only code changes are the version string and revision hash for bitkit-core in the two Xcode dependency files, plus a one-line changelog entry. Both files are consistent with each other (version 0.1.75 / revision 496c084), the bump uses an exactVersion pin so there is no floating-range risk, and the PR description notes that package resolution was verified with xcodebuild.

No files require special attention.

Important Files Changed

Filename	Overview
Bitkit.xcodeproj/project.pbxproj	Bumps bitkit-core exact version requirement from 0.1.66 to 0.1.75; no other changes.
Bitkit.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved	Updates resolved revision hash and version for bitkit-core from 0.1.66/99ffc3b to 0.1.75/496c084; consistent with the pbxproj change.
changelog.d/hotfix/lnurl-pay-core.fixed.md	New changelog fragment noting improved LNURL-pay payment handling.

Sequence Diagram

%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
    participant App as Bitkit iOS App
    participant SPM as Swift Package Manager
    participant Core as bitkit-core (GitHub)

    App->>SPM: Resolve dependencies (project.pbxproj)
    SPM->>Core: "Fetch exactVersion = 0.1.75"
    Core-->>SPM: "Return package @ revision 496c084"
    SPM-->>App: Package.resolved locked (0.1.75 / 496c084)
    App->>Core: LNURL-pay payment handling (v0.1.75)

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
sequenceDiagram
    participant App as Bitkit iOS App
    participant SPM as Swift Package Manager
    participant Core as bitkit-core (GitHub)

    App->>SPM: Resolve dependencies (project.pbxproj)
    SPM->>Core: "Fetch exactVersion = 0.1.75"
    Core-->>SPM: "Return package @ revision 496c084"
    SPM-->>App: Package.resolved locked (0.1.75 / 496c084)
    App->>Core: LNURL-pay payment handling (v0.1.75)

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_{Reviews (1): Last reviewed commit: "chore: rename changelog fragment" | Re-trigger Greptile}

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Wire core LNURL invoice validation into pay flow

For LNURL-pay requests, this bump only updates the package; the app still fetches invoices through LnurlHelper.fetchLnurlInvoice (Bitkit/Utilities/Lnurl.swift:130-149) from both LnurlPayConfirm and SendQuickpay, and those call sites then pass sats: nil to sendWithTimeout, so a callback that returns a BOLT11 for a different amount is still paid at the invoice's amount. Please route these call sites through the new bitkit-core v0.1.75 validation or validate amount/metadata locally so the dependency bump actually protects LNURL-pay users.

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[ovitrif]

Closing in favor of a release-branch PR.