feat(navigation): one shared home page, mode-routed search

docs/codebase-index.md

@@ -327,7 +327,7 @@ One shared composer (`master-search-header.tsx`) serves every mode. Placement:
 - **Mode homes** (`/services`, `/forms`, `/favourites`, `/differentials`, `/dsm`, `/specifiers`, `/formulation`, `/factsheets`, `/therapy-compass`, `/tools`, and dashboard homes): inline in the hero via the `mode-home-composer-slot` portal, on phone and tablet+ alike. (`/applications` is a redirect to `/tools`, not a composer surface.)
 - **Information (detail) pages**: catalogue/record routes under each mode (`/services/[slug]`, `/forms/[slug]`, `/medications/[slug]`, `/specifiers/[slug]`, `/formulation/[slug]`, `/factsheets/[slug]`, `/dsm/diagnoses/[slug]`, …). Route detection: `src/lib/information-pages.ts` (`isInformationPage`). Shared outer chrome: `src/components/information-page-shell.tsx` (`InformationPageShell`, breadcrumbs, optional footer). Specifier/formulation mode shells re-export that primitive. Intentional opt-outs: document viewer, therapy-compass CSS workspace, differentials presentation workflow.
 - **Result and detail views**: fixed bottom dock on phone (compact variant on submitted searches), sticky top from `sm` up.
-- **Results routing**: standalone routes own their submitted searches via `?q=…&run=1` (`/services` → `ServicesNavigatorPage`, `/forms` → `FormsSearchResultsPage`, `/differentials` → `DifferentialsHome` results view, `/formulation` → local mechanism results, `/favourites` filters the command library in place). Answer, Documents, and Prescribing submitted searches render inside `ClinicalDashboard` — intentional, since they need retrieval/answer state. `/?mode=favourites` redirects to `/favourites`; `/?mode=differentials` redirects to `/differentials`; `/?mode=dsm` redirects to `/dsm`; `/?mode=specifiers` redirects to `/specifiers`; `/?mode=formulation` redirects to `/formulation`.
+- **Results routing**: standalone routes own their submitted searches via `?q=…&run=1` (`/services` → `ServicesNavigatorPage`, `/forms` → `FormsSearchResultsPage`, `/differentials` → `DifferentialsHome` results view, `/formulation` → local mechanism results, `/favourites` filters the command library in place). Answer, Documents, and Prescribing submitted searches render inside `ClinicalDashboard` — intentional, since they need retrieval/answer state. Bare `/?mode=<id>` always renders the shared home with that mode preselected; only a submitted deep link (`q` plus `run=1`) resolves to the mode's own search surface (proxy early-redirect still covers favourites/differentials/specifiers for those submitted aliases).
 - **Intentionally composer-free routes**: `/differentials/presentations/*` (comparison workflow owns its chrome), `/documents/[id]` viewer (has its own in-document ask composer), `/documents/source/*` (document flow owns mobile chrome). Do not re-flag these in search-consistency audits.
 - **Shared secondary navigation**: `src/components/secondary-navigation.tsx` (`SecondaryNavigation`, route/section/action items, roving tablist, fragment section tracking) and `src/components/page-secondary-navigation.tsx` (`PageSecondaryNavigation`, per-route selection of mode destinations vs. "On this page" section anchors). Mode destinations come from `src/lib/mode-secondary-navigation.ts` (`modeSecondaryNavigationRegistry`, no "Home" item). `GlobalSearchShell` renders it in normal flow at the top of `#main-content` for its owned namespaced modes; it self-suppresses on clean mode homes, locally-owned detail routes (medications, factsheets, differentials diagnoses) and Therapy Compass, and Specifiers/Formulation keep their existing local `Subnav` (so the shared mode bar is skipped for those two modes to avoid a duplicate row).
 - **Local filter fields** (sidebar "Search chats", document drawer "Find a document"/"Find a source PDF") are scoped filters, not global search; they share the `fieldControlWithIcon`/`fieldIcon` primitives.

docs/design-system/ADOPTION.md

@@ -327,20 +327,20 @@ product exclusions; the only route-only disposition is the documented legacy doc
 redirect. Shared shell/component roots carry their own explicit `shared-shell` disposition.
 
 Registered public components: 53
-Declared product roots: 55
+Declared product roots: 57
 Roots with a literal `.ckb-v2` opt-in: 1
-Roots inheriting `.ckb-v2` from the global `<html>`: 54
+Roots inheriting `.ckb-v2` from the global `<html>`: 56
 Production surfaces observed under v2: 14/14
 Dynamic `ckb-v2` constructions: 0
-Declared production page routes: 47/47
+Declared production page routes: 49/49
 
 Source observation and contract declaration are independent. A literal `ckb-v2` on the global `<html>` makes every production surface inherit v2, but it does not approve that adoption.
 The Proof column summarizes each surface's dark, forced-colours, 320px, print and browser declarations; exact statuses and evidence paths live in the manifest.
 Observed v2 under a compatibility declaration fails closed. A declared v2 shell also fails closed unless every proof is passed with evidence and its visual baseline is committed or explicitly not-committed (pending Linux screenshot approval).
 
 | Surface                            | Disposition     | Routes | Roots | Declared shell | Observed shell (mount)     | Proof          | Baseline       |
 | ---------------------------------- | --------------- | -----: | ----: | -------------- | -------------------------- | -------------- | -------------- |
-| `root-shell-and-settings`          | shared-shell    |      1 |     4 | v2             | v2 (inherited-global-root) | passed         | not-committed  |
+| `root-shell-and-settings`          | shared-shell    |      3 |     6 | v2             | v2 (inherited-global-root) | passed         | not-committed  |
 | `catalogues-forms-and-info`        | owned           |     13 |    13 | v2             | v2 (inherited-global-root) | passed         | not-committed  |
 | `differentials`                    | owned           |      4 |     4 | v2             | v2 (inherited-global-root) | passed         | not-committed  |
 | `formulation`                      | owned           |      5 |     5 | v2             | v2 (inherited-global-root) | passed         | not-committed  |

docs/design-system/adoption-contract.json

@@ -72,7 +72,11 @@
     {
       "id": "root-shell-and-settings",
       "disposition": "shared-shell",
-      "routes": ["src/app/(search-app)/page.tsx"],
+      "routes": [
+        "src/app/(search-app)/page.tsx",
+        "src/app/(search-app)/documents/page.tsx",
+        "src/app/(search-app)/medications/page.tsx"
+      ],
       "routeRoots": true,
       "roots": [
         "src/app/layout.tsx",

docs/design-system/adoption-manifest.json

@@ -1902,7 +1902,11 @@
       "id": "root-shell-and-settings",
       "disposition": "shared-shell",
       "documentedDisposition": "The root route, shared application shell, global overlays, answer orchestration and settings UI are owned by the mounted shell rather than separate settings routes.",
-      "routes": ["src/app/(search-app)/page.tsx"],
+      "routes": [
+        "src/app/(search-app)/documents/page.tsx",
+        "src/app/(search-app)/medications/page.tsx",
+        "src/app/(search-app)/page.tsx"
+      ],
       "routeRoots": true,
       "proofApplicability": "required",
       "nonVisualRoute": null,
@@ -1942,7 +1946,7 @@
       "sanctionedSpecialPatterns": ["ClinicalDashboard", "OverlayRoot", "SettingsDialog"],
       "roots": [
         {
-          "file": "src/app/(search-app)/page.tsx",
+          "file": "src/app/(search-app)/documents/page.tsx",
           "exists": true,
           "imports": [],
           "importedFamilies": [],
@@ -1951,6 +1955,26 @@
           "v2MountMode": "inherited-global-root",
           "sanctionedPatternsPresent": ["ClinicalDashboard"]
         },
+        {
+          "file": "src/app/(search-app)/medications/page.tsx",
+          "exists": true,
+          "imports": [],
+          "importedFamilies": [],
+          "literalCkbV2": false,
+          "dynamicCkbV2": false,
+          "v2MountMode": "inherited-global-root",
+          "sanctionedPatternsPresent": []
+        },
+        {
+          "file": "src/app/(search-app)/page.tsx",
+          "exists": true,
+          "imports": [],
+          "importedFamilies": [],
+          "literalCkbV2": false,
+          "dynamicCkbV2": false,
+          "v2MountMode": "inherited-global-root",
+          "sanctionedPatternsPresent": []
+        },
         {
           "file": "src/app/layout.tsx",
           "exists": true,
@@ -3148,6 +3172,7 @@
       "src/app/(search-app)/differentials/page.tsx",
       "src/app/(search-app)/differentials/presentations/[slug]/page.tsx",
       "src/app/(search-app)/documents/[id]/page.tsx",
+      "src/app/(search-app)/documents/page.tsx",
       "src/app/(search-app)/documents/search/page.tsx",
       "src/app/(search-app)/documents/source/evidence/page.tsx",
       "src/app/(search-app)/documents/source/page.tsx",
@@ -3168,6 +3193,7 @@
       "src/app/(search-app)/formulation/map/page.tsx",
       "src/app/(search-app)/formulation/page.tsx",
       "src/app/(search-app)/medications/[slug]/page.tsx",
+      "src/app/(search-app)/medications/page.tsx",
       "src/app/(search-app)/page.tsx",
       "src/app/(search-app)/services/[slug]/page.tsx",
       "src/app/(search-app)/services/page.tsx",
@@ -3197,6 +3223,7 @@
       "src/app/(search-app)/differentials/page.tsx",
       "src/app/(search-app)/differentials/presentations/[slug]/page.tsx",
       "src/app/(search-app)/documents/[id]/page.tsx",
+      "src/app/(search-app)/documents/page.tsx",
       "src/app/(search-app)/documents/search/page.tsx",
       "src/app/(search-app)/documents/source/evidence/page.tsx",
       "src/app/(search-app)/documents/source/page.tsx",
@@ -3217,6 +3244,7 @@
       "src/app/(search-app)/formulation/map/page.tsx",
       "src/app/(search-app)/formulation/page.tsx",
       "src/app/(search-app)/medications/[slug]/page.tsx",
+      "src/app/(search-app)/medications/page.tsx",
       "src/app/(search-app)/page.tsx",
       "src/app/(search-app)/services/[slug]/page.tsx",
       "src/app/(search-app)/services/page.tsx",
@@ -3245,7 +3273,7 @@
   },
   "adoption": {
     "literalCkbV2RootCount": 1,
-    "inheritedCkbV2RootCount": 54,
+    "inheritedCkbV2RootCount": 56,
     "dynamicCkbV2RootCount": 0,
     "v2MountedSurfaceCount": 14,
     "declaredV2SurfaceCount": 14
@@ -3254,8 +3282,8 @@
     "registeredComponentCount": 53,
     "previewCount": 53,
     "productImportedComponentCount": 30,
-    "rootCount": 55,
-    "productionRouteCount": 47,
-    "nextUiEntryCount": 99
+    "rootCount": 57,
+    "productionRouteCount": 49,
+    "nextUiEntryCount": 101
   }
 }