chore: start v15 dev cycle

[flanakin]

🛠️ Description

Starts the v15 dev cycle:

• Bumps version to 15.0.0-dev
• Updates integration test to expect v14 release files and plan for v15
• Adds v15 changelog placeholder targeting Jun 2026

Fixes #

📷 Screenshots

N/A

📋 Checklist

🔬 How did you test this change?

• 🙌 Integration tests

📦 Deploy to test?

• Hubs + ADX (managed)
• Hubs + Fabric (manual) — URI:
• Hubs (manual)
• Hubs (no data)
• Workbooks
• Alerts

🙋‍♀️ Do any of the following that apply?

• 🤏 The change is less than 20 lines of code.

📑 Did you update `docs/changelog.md`?

• ✅ Updated changelog (required for `dev` PRs)

📖 Did you update documentation?

• ✅ Public docs in `docs-mslearn` (required for `dev`)
• ❎ Docs not needed (small/internal change)

[Copilot]

Pull request overview

Starts the v15 dev cycle: bumps the toolkit version from 14.0 to 15.0-dev across all version marker files, refactors the post-release manual checklist into a new /update-version Claude Code command, and updates the integration test plus the changelog to add a v15 placeholder targeted for June 2026.

Changes:

• Bumps version markers (package.json, package-lock.json, all ftkver.txt/ftktag.txt, Get-VersionNumber.ps1, plugin/marketplace JSON) to v15-dev and adds a v15 section to docs-mslearn/toolkit/changelog.md.
• Refactors Update-Version.ps1 label handling and Merge-DevBranch.ps1 recursive invocation, and adds new .claude/commands/update-version.md automating the post-release cycle.
• Updates the integration test to expect v14 files (finops-hub-copilot-studio.zip, CommitmentDiscountEligibility.csv) and bumps the planned release to 15, and trims the manual post-release checklist.

Reviewed changes

Copilot reviewed 22 out of 23 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
package.json, package-lock.json	Bumps npm version to 15.0.0-dev.0.
src//ftkver.txt, src//ftktag.txt, docs/_includes/ftkver.txt, docs/_includes/ftktag.txt	Bumps version/tag markers to 15.0-dev / v15.
src/powershell/Private/Get-VersionNumber.ps1	Returns '15.0-dev'.
src/templates/claude-plugin/.claude-plugin/plugin.json	Bumps plugin version (set to 15.0.0, inconsistent with rest).
.claude-plugin/marketplace.json	Bumps marketplace plugin version to 15.0-dev (skips v14).
src/scripts/Update-Version.ps1	Reworks label handling to set <base>-<label>.0 from current package.json version.
src/scripts/Merge-DevBranch.ps1	Recursive call switched to & $PSCommandPath for portability.
src/powershell/Tests/Integration/Toolkit.Tests.ps1	Adds v14 to expected versions, bumps planned release to 15, adds two file checks.
docs-mslearn/toolkit/changelog.md	Adds v15 release section; moves Bicep pending updates into Unreleased comment block.
docs-mslearn/framework/manage/*.md	Updates survey IDs from FTK14.0 → FTK15.0 and cleans trailing whitespace.
.github/ISSUE_TEMPLATE/-internal-only--release-checklist.md	Collapses post-release steps into a single /update-version task; drops the features/alerts deletion line and explicit feature-branch list.
.claude/commands/update-version.md	New Claude Code command automating the v-next dev-cycle setup.

[flanakin]

🤖 [AI][Claude Sonnet 4.6] PR Update Summary

Addressed: 8 threads

• ✅ Implemented: 4 (changelog Bicep removal, Merge-DevBranch fallback, update-version.md allowed-tools simplification, deferred push to Phase 3)
• 🤔 Needs discussion: 4 (plugin.json semver normalization, marketplace version history, Update-Version.ps1 label flow, features/alerts)

Key changes: Removed redundant allowed-tools entry, deferred branch push to after commit, added $PSCommandPath fallback in Merge-DevBranch.ps1, added clarifying comment in Update-Version.ps1, and removed the Bicep Registry pending entry from the commented-out Unreleased block.