feat: file-read gate allows Edit, add legacy-peer-deps for grammar install

- Change file-read gate from deny to allow with limit:1, injecting the
  observation timeline as additionalContext. Edit now works on gated files
  since the file registers as "read" with near-zero token cost.
- Add updatedInput to HookResult type for PreToolUse hooks.
- Add .npmrc with legacy-peer-deps=true for tree-sitter peer dep conflicts.
- Add --legacy-peer-deps to npm fallback paths in smart-install.js so end
  users without bun can install the 24 grammar packages.
- Rebuild plugin artifacts.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/cli/handlers/file-context.ts

@@ -138,11 +138,11 @@ function formatFileTimeline(observations: ObservationRow[], filePath: string): s
 
   const lines: string[] = [
     `Current: ${currentDate} ${currentTime} ${currentTimezone}`,
-    `Read blocked: This file has prior observations. Choose the cheapest path:`,
+    `This file has prior observations. Only line 1 was read to save tokens.`,
     `- **Already know enough?** The timeline below may be all you need (semantic priming).`,
     `- **Need details?** get_observations([IDs]) — ~300 tokens each.`,
-    `- **Need current code?** smart_outline("${safePath}") for structure (~1-2k tokens), smart_unfold("${safePath}", "<symbol>") for a specific function (~400-2k tokens).`,
-    `- **Need to edit?** Use smart tools for line numbers, then sed via Bash (Edit requires Read, but you already have the context).`,
+    `- **Need full file?** Read again with offset/limit for the section you need.`,
+    `- **Need to edit?** Edit works — the file is registered as read. Use smart_outline("${safePath}") for line numbers.`,
   ];
 
   for (const [day, dayObservations] of sortedDays) {
@@ -233,15 +233,19 @@ export const fileContextHandler: EventHandler = {
         return { continue: true, suppressOutput: true };
       }
 
-      // Deny the read with the timeline as the reason — Claude sees the timeline
-      // and decides: work from semantic priming, use get_observations(), or ask user to allow read
+      // Allow the read with limit: 1 line — just enough for Edit's "file must be read"
+      // check to pass, while keeping token cost near zero. The observation timeline
+      // gives Claude full context about prior work on this file.
       const timeline = formatFileTimeline(dedupedObservations, filePath);
       return {
         hookSpecificOutput: {
           hookEventName: 'PreToolUse',
-          additionalContext: '',
-          permissionDecision: 'deny',
-          permissionDecisionReason: timeline,
+          additionalContext: timeline,
+          permissionDecision: 'allow',
+          updatedInput: {
+            file_path: filePath,
+            limit: 1,
+          },
         },
       };
     } catch (error) {

src/cli/types.ts

@@ -22,6 +22,7 @@ export interface HookResult {
     additionalContext: string;
     permissionDecision?: 'allow' | 'deny';
     permissionDecisionReason?: string;
+    updatedInput?: Record<string, unknown>;
   };
   systemMessage?: string;
   exitCode?: number;