fix(P01): replace hardcoded phase=1 in orchestrator and fix getDecisions double-fetch

---ci---
project: ci
phase: 1
milestone: v0.8
status: in_progress
decisions:
  - id: D-021
    decision: 6-phase wave-ordered vertical slices for v0.8
    rationale: Each phase independently demoable; critical fixes first
    confidence: 0.90
requirements:
  covered: [FIX-01, FIX-06]
---/ci---

FIX-01: Replace 5 hardcoded phase=1 literals in orchestrator.ts mechanical
execution path with this.pipelineState!.current_phase. The orchestrator
correctly tracks current_phase but commits always embedded literal 1.

FIX-06: Replace getDecisions() redundant double-fetch with single
getRecentCommits(50) call, delegating to existing getDecisionsFromCommits().
Old code called getRecentCommits(50) once per grep match entry (O(N*M)
when it should be O(1)).

package-lock.json

@@ -1,13 +1,12 @@
 {
   "name": "@continuous-intelligence/ciagent",
-  "version": "0.5.0",
+  "version": "0.7.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-  "name": "@continuous-intelligence/ciagent",
-      "version": "0.5.0",
-      "hasInstallScript": true,
+      "name": "@continuous-intelligence/ciagent",
+      "version": "0.7.0",
       "license": "MIT",
       "dependencies": {
         "commander": "^12.1.0",