docs(ideation→track): Move report into intent_dsl_survey_20260612 folder

Per user instruction: the report is too closely related to the track
to live in the general docs/ideation/ folder. It's the track's main
deliverable, not a general ideation doc. The existing convention for
track reports is the track folder (e.g., nagent_review_20260608/report.md).

This commit is the phase 2+3 work:
  - Adds the integrated report (417 lines, 8 ## headings, 40 ###)
    to conductor/tracks/intent_dsl_survey_20260612/report.md
  - Adds 5 Tier 2 sub-reports (1319 lines combined) to
    conductor/tracks/intent_dsl_survey_20260612/research/
  - Removes the old docs/ideation/ location (moved, not duplicated)
  - Updates spec.md, plan.md, metadata.json, tracks.md to point at
    the new location

Report structure:
  Section 1: 4 anchor claims (O'Donnell, Onat/Lottes, CoSy, Jofito)
  Section 2: 8 prior-art clusters (with sub-report references)
  Section 3: 14-primitive grammar + ambiguity flags
  Section 4: 4-tier vocab (12+12+10+8 = 42 verbs)
  Section 5: 4 hardware-mapping anchor claims
  Section 6: 10 AI-agent properties
  Section 7: 8 open questions for follow-up B
  Appendix: bibliography (external, project, sub-reports)

The sub-reports contain the deep analysis with citations; the main
report is the ejecutiva summary. Tier 2 sub-agents handled the heavy
research (5 cluster sub-reports in research/); Tier 1 focused on
integration and writing the simpler sections inline.

Time-sensitive: report must complete before nagent v2.2.

conductor/tracks/intent_dsl_survey_20260612/metadata.json

@@ -7,7 +7,7 @@
   "type": "research-only",
   "domain": "Meta-Tooling",
   "blocked_by": [],
-  "deliverable": "docs/ideation/2026-06-12-intent-based-scripting-languages.md",
+  "deliverable": "conductor/tracks/intent_dsl_survey_20260612/report.md",
   "consumed_by": [
     "nagent v2.2 (Future-Track Candidate #4: Intent-based DSL)",
     "intent_dsl_for_meta_tooling_20260608_PLACEHOLDER (per mcp_architecture_refactor_20260606/spec.md §12.1)",