feat: add tag management modal

[saurabhhhcodes]

What changed

• Added a tag management modal to the Leads page so org managers can create, rename, recolor, and delete tags without leaving the workspace.
• Wired the modal to the existing /tags/ API with create, PATCH, and DELETE actions.
• Kept the filter chips in sync when tags are changed or removed.

Why

• Issue LO-057 [Intermediate]: Custom Tag Management Dashboard #394 asked for a global tag management dashboard, and the Leads page already has tag filtering and tag-aware data, so this is the lightest place to expose the workflow.

Validation

• git diff --check
• node --check on the inline Leads page module

Closes #394

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: b547cc37-4f39-4ad9-b3c1-ff3a0425f69a

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}