docs(m10): record studio-workflow milestone tracking

Refs #146

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BUILD-PLAN.md

@@ -1,6 +1,6 @@
 # BUILD-PLAN.md — ICCery v2 Mac
 
-Spec snapshot: `docs/`. Source of tickets: Gitea milestones M1–M6 + Later.
+Spec snapshot: `docs/`. Source of tickets: Gitea milestones M1–M6 + M10 (id 32) + Later.
 
 ## Sprint rule
 Do not start milestone N+1 implementation until milestone N **CI/mock gate** is green.
@@ -17,9 +17,14 @@ Hardware gates block *release of that sprint*, not filing, and not starting codi
 | M5 | Profile / verify / install | 23–27 | colprof → `.icc`; profcheck parse; atomic history; install into temp dir | Full `.ti1`→`.icc`; profile visible in ColorSync Utility |
 | M6 | Gamut, Stage 0, CGATS, release | 28–32 | `.gam` fixtures; cal argv; CGATS round-trip; signed sidecars; dmgbuild | Stage 0 on a real printer; gamut of a real profile |
 | M7 | Deduplicate & consolidate | 79–86 | Shared runner loop; JSONFileStore; preset↔config maps; Notice/log helper; ProcessManager factory; PrintSession VM; identity + colour-type cleanup | N/A |
+| M8 | Deduplicate & consolidate | 79–86 | (already shipped on `develop`) | N/A |
+| M9 | macOS 12 / Xcode 14.2 retarget | (milestone/m9-monterey, PR #145) | XCTest + ObservableObject + macos-12 CI | N/A |
+| M10 | Studio workflow | 146–149 | Media library + spot-read + gamut compare + project file unit/UI smoke | Real printer+paper+.cal; live spot-read; two `.gam`; reopen `.icceryproj` |
 | Later | Quartz / TargetPrint | 16 | `ICCeryPrintKit` standalone + seam test | 1:1 on paper vs TIFF |
 
-Issue **16 is not an M3 or M6 exit gate.**
+M8 and M9 merged to `develop` via PR #104 / #145; M10 starts from `800c980`.
+
+Issue **16 is not an M3, M6, or M10 exit gate.**
 
 ## Branch taxonomy
 

README.md

@@ -12,7 +12,9 @@ All measurement, chart generation, and profile mathematics live in the [Gronod A
 | Default branch | `develop` |
 | M6 | Stage 0 calibration, CGATS import, SceneKit gamut viewer, packaging — shipped on `develop` |
 | M7 | Pre-UAT hardening & baseline consolidation — shipped on `develop` |
-| M8 | Deduplication/consolidation contracts & UAT-ready hardening (#79–#86) — in flight on `milestone/m8-consolidation` |
+| M8 | Deduplication/consolidation contracts & UAT-ready hardening (#79–#86) — shipped on `develop` |
+| M9 | macOS 12 / Xcode 14.2 retarget — shipped on `develop` (PR #145) |
+| M10 | Studio workflow (#146–#149) — in flight on `milestone/m10-studio` |
 | Licence | Proprietary source in [`LICENCE.md`](LICENCE.md); bundled Argyll sidecars remain AGPLv3 |
 
 ## What it does
@@ -176,11 +178,11 @@ Agent / branch rules: [`AGENTS.md`](AGENTS.md), [`BUILD-PLAN.md`](BUILD-PLAN.md)
 
 ```
 develop
-  └── milestone/m8-consolidation   # integration branch
+  └── milestone/m10-studio   # M10 integration branch
         └── feat/<issue>-<slug>    # one issue per branch
 ```
 
-Feature PRs target the current milestone branch, not `develop`. The milestone branch merges to `develop` when its issues are green. Completion PRs for issues #79–#86 target `milestone/m8-consolidation`; `milestone/m8-consolidation` merges into `develop` once all milestone gates pass. Do not open umbrella "bugfix" branches that mix tickets.
+Feature PRs target the current milestone branch, not `develop`. The milestone branch merges to `develop` when its issues are green. Completion PRs for issues #146–#149 target `milestone/m10-studio`; `milestone/m10-studio` merges into `develop` once all milestone gates pass. Do not open umbrella "bugfix" branches that mix tickets.
 
 ## Licence