fix: Update the vault tag id when paste the vault tag

[cwangsmv]

Background:
Each vault tag has a unique ID that establishes the relationship between the tag and the user-selected vault credential record in the database.

However, when a user copies and pastes a vault tag, the duplicated tags will share the same unique ID. As a result, modifying the credential record linked to one tag can unintentionally affect the other vault as well.

Changes:

• When paste in editor, add an extra check logic to detect if paste string contains vault tag pattern
• Generate a new uniqe tag and replace it in the paste content

INS-3535

[Copilot]

Pull request overview

This PR addresses duplicated external vault tag IDs when users copy/paste vault template tags, by regenerating fresh IDs during paste so each pasted tag links to a distinct credential mapping.

Changes:

• Added external-vault tag ID detection and replacement helpers in templating utilities.
• Updated CodeMirror-based editors to regenerate vault tag IDs on paste (both single-line and multi-line editors).
• Refactored legacy vault tag conversion to use the shared ID generator and added unit tests for the replacement logic.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
packages/insomnia/src/ui/components/templating/tag-editor.tsx	Switches legacy vault tag conversion to the shared external vault tag ID generator.
packages/insomnia/src/ui/components/.client/codemirror/one-line-editor.tsx	Adds paste handling to detect vault tags and regenerate IDs in single-line editor content.
packages/insomnia/src/ui/components/.client/codemirror/code-editor.tsx	Adds paste handling to regenerate vault tag IDs (and preserves existing onPaste behavior).
packages/insomnia/src/common/templating/utils.ts	Introduces external vault tag ID prefix, generator, detection, and replacement implementation.
packages/insomnia/src/common/templating/tests/utils.test.ts	Adds unit tests for vault tag ID replacement behavior.
packages/insomnia/src/common/constants.ts	Adds an exported prefix constant for external vault tag IDs.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.

Suppressed comments (3)

packages/insomnia/src/ui/components/.client/codemirror/one-line-editor.tsx:218

• change.text.join('') removes line boundaries before the replace(/\n/g, ' ') runs, so multi-line paste content gets concatenated without spaces (e.g. "a\nb" -> "ab"). Since this is the single-line editor, it should preserve boundaries by joining with newlines (or spaces) before collapsing to a single line.

          let editorPasteText = change.text.join('').replace(/\n/g, ' ');
          if (containsExternalVaultTag(editorPasteText)) {
            editorPasteText = replaceVaultTagIdIfNeeded(editorPasteText);
          }
          // If we're in single-line mode, merge all changed lines into one

packages/insomnia/src/common/templating/utils.ts:180

• vaultTagIdRegex is exported with the global (g) flag. Global regexes are stateful when used with RegExp.test() (and some matchers), which can lead to flaky behavior across repeated calls. Consider exporting a non-global regex and using a local global clone only where replacement needs it.

const tagRegex = /{%[\s\S]+?%}/g;
export const vaultTagIdRegex = new RegExp(`${externalVaultTagPrefix}_[a-z0-9]{32}`, 'g');
export const containsExternalVaultTag = (input: string) => {

packages/insomnia/src/ui/components/.client/codemirror/one-line-editor.tsx:207

• isPaste is currently assigned change.origin === 'paste' && change.update, which can evaluate to the update function instead of a boolean. This works at runtime but is confusing for typing and future maintenance; consider making the condition explicitly boolean (or inlining the condition).

      codeMirror.current.on('beforeChange', (_: CodeMirror.Editor, change: CodeMirror.EditorChangeCancellable) => {
        const isPaste = change.origin === 'paste' && change.update;
        if (isPaste) {