BIM as a per-package kind; one project flows BIM -> construction

Replace the whole-project BIM 'mode' with an opt-in capability + a
per-package kind, so a single project can produce both model and
install packages (and install-only projects are unaffected).

SOP tool:
- Step 4 "Include BIM / VDC work packages" checkbox (state.bimEnabled).
  Enabling adds BIM package types + BIM release gates (flagged bim) plus
  BIM roles/sources/process steps alongside the construction defaults;
  disabling strips the bim-flagged items.
- Generated SOP carries bimEnabled and a per-type / per-constraint bim flag.
- Required sign-off role titles stay editable (no longer force-renamed).

Work Package Creator:
- Shows a Package Type selector (Install IWP / BIM EWP) only when the
  SOP has bimEnabled; kind is saved per package and labeled in the output.
- WP types and release gates are filtered by kind (BIM types+gates for
  EWP, install types+gates for IWP).
- EWP reveals the BIM Details card and hides controls.dev Assets /
  Materials / Kitting-MIMO; IWP shows those plus the "Enabled by - BIM
  package" traceability link.

Supersedes the earlier whole-project BIM mode.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

html/wp-creation-index.html

@@ -44,6 +44,16 @@
 
 <div class="main">
 
+  <!-- PACKAGE KIND (only shown when the project's SOP includes BIM/VDC) -->
+  <div class="card" id="kind-row" style="display:none">
+    <div class="sub-heading">Package Type</div>
+    <div class="notice">This project includes BIM/VDC packages. Choose what this one is — it tailors the fields below and the WP types / release gates offered.</div>
+    <div class="radio-group" id="kind-group" style="margin-bottom:0">
+      <label class="radio-pill" data-val="iwp"><input type="radio" name="pkgkind" onclick="setKind('iwp')"><span class="dot"></span>Install package (IWP)</label>
+      <label class="radio-pill" data-val="ewp"><input type="radio" name="pkgkind" onclick="setKind('ewp')"><span class="dot"></span>BIM package (EWP)</label>
+    </div>
+  </div>
+
   <!-- GENERAL INFORMATION -->
   <div class="card">
     <div class="section-header"><div class="section-title">General Information</div>
@@ -80,7 +90,7 @@
       <div class="field"><label>Specification Section</label><input type="text" id="wp_spec" placeholder="e.g. 26_05_33_00 - Raceway and Boxes"><div class="field-hint" id="spec-folder-link"></div></div>
     </div>
     <div class="field field-grid col1"><div class="field"><label>Description</label><textarea id="wp_desc" rows="2" placeholder="Short summary of the package"></textarea></div></div>
-    <div class="field field-grid col1"><div class="field"><label>Enabled by — BIM package(s)<span class="help-tip" data-tip="Advanced Work Packaging traceability: link the BIM / model package(s) that enabled this install package. Paste the MWP number(s) or a link to the model package.">i</span></label><input type="text" id="wp_bimlink" placeholder="e.g. MWP07-FAB-CONDUITS, or a link to the model package"></div></div>
+    <div class="field field-grid col1" id="bimlink-wrap"><div class="field"><label>Enabled by — BIM package(s)<span class="help-tip" data-tip="Advanced Work Packaging traceability: link the BIM / model package(s) that enabled this install package. Paste the MWP number(s) or a link to the model package.">i</span></label><input type="text" id="wp_bimlink" placeholder="e.g. MWP07-FAB-CONDUITS, or a link to the model package"></div></div>
   </div>
 
   <!-- BIM / MODEL DETAILS (shown for BIM/VDC SOPs) -->