fix: decode colons in Flux inventory resource names

[nklmilojevic]

Flux inventory entries with colons in RBAC resource names showed invalid inventory entry. The parser treated the encoded __ in each name as field separators.

Parse the namespace from the start and the kind and API group from the end, then convert __ back to : in the name. The managed resource row and Enter navigation now use the decoded name.

Tests cover Role, RoleBinding, ClusterRole, and ClusterRoleBinding names in both Kustomization and HelmRelease views, including names with multiple colons.

Validation: just check (format check, Clippy, and tests).

Closes #626

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; the parsing change matches the tested Flux inventory encoding and correctly propagates decoded names into display and navigation.

Summary

The PR fixes Flux inventory parsing for RBAC resource names containing encoded colons.

• Parses namespace from the beginning and kind/API group from the end, preserving encoded separators within the resource name.
• Decodes __ to : before rendering inventory rows and constructing navigation targets.
• Adds Kustomization and HelmRelease coverage for namespaced and cluster-scoped RBAC resources, including names containing multiple colons.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  A[Flux inventory ID] --> B[Split namespace from start]
  B --> C[Split kind from end]
  C --> D[Split API group from end]
  D --> E[Decode __ as colon in name]
  E --> F[Render managed-resource row]
  E --> G[Build metadata.name field selector]
  G --> H[Navigate to resource table]

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