fix(WP-0014/A2): close remaining pure-param and structural compilation errors

Convert all remaining `<- paramOrNothing / param / paramOrDefault /
currentUserOrNothing` monadic binds to `let` — these functions are pure
(ImplicitParams-based) in IHP v1.5, so `<-` is a type error in an IO
do-block.

Controllers fixed:
  AgentDelegations, AiGovernancePolicies, Annotations, ApiConsumers,
  CollectiveProposals, DecisionRecords, DeploymentRecords,
  HubCapabilityManifests, HubRoutingRules, InstitutionalKnowledge,
  OutcomeCorrelations, RequirementCandidates, TypeRegistries,
  WebhookSubscriptions, Widgets,
  Api/V2/{Annotations,InteractionEvents,Token}

WebhookSubscriptions: remove orphaned `Right () ->` case arm that was
left inside a bare `unless` block (structural parse error).

Also carries forward all in-progress fixes from the working tree:
  helpers (AgentBridge, ApiRateLimit, BottleneckDetector,
            CrossHubPropagation, FrictionScore),
  views (CanSelect instances, HSX lambda extraction, formFor wrappers),
  env/build (envrc GHCi perms, flake.nix Tailwind + GHC resource limits,
             static/app.css additional Tailwind output).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

static/app.css

@@ -667,6 +667,22 @@ video {
   margin-top: 2rem;
 }
 
+.mb-16 {
+  margin-bottom: 4rem;
+}
+
+.mt-10 {
+  margin-top: 2.5rem;
+}
+
+.mb-12 {
+  margin-bottom: 3rem;
+}
+
+.mb-10 {
+  margin-bottom: 2.5rem;
+}
+
 .block {
   display: block;
 }
@@ -683,6 +699,10 @@ video {
   display: flex;
 }
 
+.inline-flex {
+  display: inline-flex;
+}
+
 .table {
   display: table;
 }
@@ -715,6 +735,14 @@ video {
   height: 2rem;
 }
 
+.h-7 {
+  height: 1.75rem;
+}
+
+.h-6 {
+  height: 1.5rem;
+}
+
 .w-16 {
   width: 4rem;
 }
@@ -747,6 +775,14 @@ video {
   width: 100%;
 }
 
+.w-7 {
+  width: 1.75rem;
+}
+
+.w-6 {
+  width: 1.5rem;
+}
+
 .min-w-full {
   min-width: 100%;
 }
@@ -799,6 +835,14 @@ video {
   cursor: pointer;
 }
 
+.list-inside {
+  list-style-position: inside;
+}
+
+.list-disc {
+  list-style-type: disc;
+}
+
 .grid-cols-1 {
   grid-template-columns: repeat(1, minmax(0, 1fr));
 }
@@ -992,6 +1036,10 @@ video {
   border-radius: 0.125rem;
 }
 
+.rounded-xl {
+  border-radius: 0.75rem;
+}
+
 .border {
   border-width: 1px;
 }
@@ -1127,6 +1175,11 @@ video {
   border-color: rgb(253 224 71 / var(--tw-border-opacity, 1));
 }
 
+.border-emerald-200 {
+  --tw-border-opacity: 1;
+  border-color: rgb(167 243 208 / var(--tw-border-opacity, 1));
+}
+
 .bg-amber-100 {
   --tw-bg-opacity: 1;
   background-color: rgb(254 243 199 / var(--tw-bg-opacity, 1));
@@ -1342,6 +1395,11 @@ video {
   background-color: rgb(234 179 8 / var(--tw-bg-opacity, 1));
 }
 
+.bg-emerald-50 {
+  --tw-bg-opacity: 1;
+  background-color: rgb(236 253 245 / var(--tw-bg-opacity, 1));
+}
+
 .p-3 {
   padding: 0.75rem;
 }
@@ -1437,6 +1495,16 @@ video {
   padding-bottom: 2rem;
 }
 
+.py-12 {
+  padding-top: 3rem;
+  padding-bottom: 3rem;
+}
+
+.py-10 {
+  padding-top: 2.5rem;
+  padding-bottom: 2.5rem;
+}
+
 .pb-1 {
   padding-bottom: 0.25rem;
 }
@@ -1461,6 +1529,10 @@ video {
   padding-top: 1rem;
 }
 
+.pb-2 {
+  padding-bottom: 0.5rem;
+}
+
 .text-left {
   text-align: left;
 }
@@ -1512,6 +1584,11 @@ video {
   line-height: 1rem;
 }
 
+.text-4xl {
+  font-size: 2.25rem;
+  line-height: 2.5rem;
+}
+
 .font-bold {
   font-weight: 700;
 }
@@ -1743,6 +1820,26 @@ video {
   color: rgb(133 77 14 / var(--tw-text-opacity, 1));
 }
 
+.text-emerald-600 {
+  --tw-text-opacity: 1;
+  color: rgb(5 150 105 / var(--tw-text-opacity, 1));
+}
+
+.text-emerald-700 {
+  --tw-text-opacity: 1;
+  color: rgb(4 120 87 / var(--tw-text-opacity, 1));
+}
+
+.text-green-400 {
+  --tw-text-opacity: 1;
+  color: rgb(74 222 128 / var(--tw-text-opacity, 1));
+}
+
+.text-gray-200 {
+  --tw-text-opacity: 1;
+  color: rgb(229 231 235 / var(--tw-text-opacity, 1));
+}
+
 .underline {
   text-decoration-line: underline;
 }
@@ -1771,6 +1868,12 @@ video {
   filter: var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow);
 }
 
+.transition-colors {
+  transition-property: color, background-color, border-color, text-decoration-color, fill, stroke;
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+  transition-duration: 150ms;
+}
+
 .last\:border-0:last-child {
   border-width: 0px;
 }
@@ -1965,6 +2068,11 @@ video {
   color: rgb(153 27 27 / var(--tw-text-opacity, 1));
 }
 
+.hover\:text-indigo-600:hover {
+  --tw-text-opacity: 1;
+  color: rgb(79 70 229 / var(--tw-text-opacity, 1));
+}
+
 .hover\:underline:hover {
   text-decoration-line: underline;
 }
@@ -1996,6 +2104,16 @@ video {
   }
 }
 
+@media (min-width: 768px) {
+  .md\:grid-cols-3 {
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+  }
+
+  .md\:grid-cols-4 {
+    grid-template-columns: repeat(4, minmax(0, 1fr));
+  }
+}
+
 @media (min-width: 1024px) {
   .lg\:col-span-2 {
     grid-column: span 2 / span 2;