fix/chore: fix cargo install stuff and bump version

fix: add not debug to desktop_integration for lint

remove assets path from flatpak

fix db for windows

Release v0.6.7

version update and path fix

fix: add GSETTINGS_SCHEMA_DIR to devshell for nixos (#237)

glib can't find the schema directory on nixos so it results in a messed
up ui
<img width="1920" height="1080" alt="20260517_17h22m08s_grim"
src="https://github.com/user-attachments/assets/b40fd11f-a0d7-4c4b-bad4-4a16c2a94d8e"
/>
with it logging 
`(kopuz): GLib-GIO-CRITICAL: g_settings_schema_source_lookup: assertion
'source != NULL' failed`
fixed it by adding GSETTINGS_SCHEMA_DIR to the devshell pointing to the
correct directory

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Updated development environment configuration to improve local setup
compatibility.

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[![Review Change
Stack](https://storage.googleapis.com/coderabbit_public_assets/review-stack-in-coderabbit-ui.svg)](https://app.coderabbit.ai/change-stack/Kopuz-org/kopuz/pull/237?utm_source=github_walkthrough&utm_medium=github&utm_campaign=change_stack)

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Release v0.5.5

version update

Merge pull request #141 from temidaradev/revert-140-bump-symphonia-ad…

…apter-libopus

Revert "Bump symphonia-adapter-libopus to 0.2, disable bundled libopus"