fix: telemetry/memory flag mismatches, doc drift; add CI; self-dogfood

Parallel fleet audit (2 background agents) + direct work:

- src/commands/memory.mjs: `memory put --allow-secrets` was read as
  `flags.allowSecrets` (camelCase) but the CLI parser only emits
  kebab-case keys, so the flag was always undefined/false. Fixed to
  `flags['allow-secrets']`.
- Docs: `lh graph --brief` was referenced 14x across 5 agent.md files,
  harness.instructions.md, 4 SKILL.md files, onboard.prompt.md, and
  README, but `lh graph` has no --brief flag (terse output is already
  the default, --json/--severity are the only flags). Corrected every
  reference to match actual CLI surface.
- .github/workflows/ci.yml: run npm install/validate/test on node 20+22.
- Self-dogfooded `lh init --yes` in this repo, producing .agents/
  (harness.config.json, architecture.md, conventions.md, memory
  shards). `lh doctor` now reports all required checks green.
- Deduped .gitignore harness block against init's auto-managed block.

Verified: 53/53 tests pass, validate 0 errors, doctor all-green.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.agents/memory/INDEX.md

@@ -0,0 +1,15 @@
+# Memory index
+
+Only this file is always loaded. Open shard files only when needed.
+
+updated: 2026-09-09T20:49:13.380Z
+total_tokens: 228
+
+| shard | entries | tokens | updated | summary |
+| --- | ---: | ---: | --- | --- |
+| seed | 0 | 35 | 2026-09-09T20:49:13.379Z | Stable repo facts and bootstrap knowledge. |
+| failures | 0 | 38 | 2026-09-09T20:49:13.379Z | Known failures, regressions, and broken approaches. |
+| corrections | 0 | 36 | 2026-09-09T20:49:13.379Z | User corrections and changed assumptions. |
+| insights | 0 | 37 | 2026-09-09T20:49:13.379Z | Reusable discoveries and design observations. |
+| conventions | 0 | 42 | 2026-09-09T20:49:13.379Z | Project-specific conventions not yet promoted to conventions.md. |
+| quirks | 0 | 40 | 2026-09-09T20:49:13.379Z | Sharp edges, environment quirks, and non-obvious constraints. |

.agents/memory/conventions.md

@@ -0,0 +1,9 @@
+# conventions memory
+
+Project-specific conventions not yet promoted to conventions.md.
+
+Entries use:
+
+`## <ISO timestamp> — <title>`
+
+Optional next line: `tags: a, b`

.agents/memory/corrections.md

@@ -0,0 +1,9 @@
+# corrections memory
+
+User corrections and changed assumptions.
+
+Entries use:
+
+`## <ISO timestamp> — <title>`
+
+Optional next line: `tags: a, b`

.agents/memory/failures.md

@@ -0,0 +1,9 @@
+# failures memory
+
+Known failures, regressions, and broken approaches.
+
+Entries use:
+
+`## <ISO timestamp> — <title>`
+
+Optional next line: `tags: a, b`

.agents/memory/insights.md

@@ -0,0 +1,9 @@
+# insights memory
+
+Reusable discoveries and design observations.
+
+Entries use:
+
+`## <ISO timestamp> — <title>`
+
+Optional next line: `tags: a, b`

.agents/memory/quirks.md

@@ -0,0 +1,9 @@
+# quirks memory
+
+Sharp edges, environment quirks, and non-obvious constraints.
+
+Entries use:
+
+`## <ISO timestamp> — <title>`
+
+Optional next line: `tags: a, b`

.agents/memory/seed.md

@@ -0,0 +1,9 @@
+# seed memory
+
+Stable repo facts and bootstrap knowledge.
+
+Entries use:
+
+`## <ISO timestamp> — <title>`
+
+Optional next line: `tags: a, b`