agents: deduplicate timestamps, plan expansion, rename agent

- Add compact_timestamp() to store — replaces 5 copies of
  format_datetime(now_epoch()).replace([':', '-', 'T'], "")
  Also fixes missing seconds (format_datetime only had HH:MM).

- Add ConsolidationPlan::to_agent_runs() — replaces identical
  plan-to-runs-list expansion in consolidate.rs and daemon.rs.

- Port job_rename_agent to use run_one_agent — eliminates manual
  prompt building, LLM call, report storage, and visit recording
  that duplicated the shared pipeline.

- Rename Confidence::weight()/value() to delta_weight()/gate_value()
  to clarify the distinction (delta metrics vs depth gating).

poc-memory/src/agents/knowledge.rs

@@ -59,7 +59,8 @@ pub enum Confidence {
 }
 
 impl Confidence {
-    fn weight(self) -> f64 {
+    /// Weight for delta metrics — how much this action contributes to change measurement.
+    fn delta_weight(self) -> f64 {
         match self {
             Self::High => 1.0,
             Self::Medium => 0.6,
@@ -67,7 +68,8 @@ impl Confidence {
         }
     }
 
-    fn value(self) -> f64 {
+    /// Confidence value for depth gating — capped below 1.0 so even "high" must clear thresholds.
+    fn gate_value(self) -> f64 {
         match self {
             Self::High => 0.9,
             Self::Medium => 0.6,
@@ -111,7 +113,7 @@ pub fn parse_write_nodes(text: &str) -> Vec<Action> {
             content = covers_re.replace(&content, "").trim().to_string();
 
             Action {
-                weight: confidence.weight(),
+                weight: confidence.delta_weight(),
                 kind: ActionKind::WriteNode { key, content, covers },
                 confidence,
                 depth: 0,
@@ -347,8 +349,7 @@ pub fn run_one_agent(
     let output = llm::call_sonnet(llm_tag, &agent_batch.prompt)?;
 
     // Store raw output for audit trail
-    let ts = store::format_datetime(store::now_epoch())
-        .replace([':', '-', 'T'], "");
+    let ts = store::compact_timestamp();
     let report_key = format!("_{}-{}-{}", llm_tag, agent_name, ts);
     let provenance = agent_provenance(agent_name);
     store.upsert_provenance(&report_key, &output, provenance).ok();
@@ -602,7 +603,7 @@ fn run_cycle(
     config: &KnowledgeLoopConfig,
     depth_db: &mut DepthDb,
 ) -> Result<CycleResult, String> {
-    let timestamp = chrono::Local::now().format("%Y%m%dT%H%M%S").to_string();
+    let timestamp = store::compact_timestamp();
     eprintln!("\n{}", "=".repeat(60));
     eprintln!("CYCLE {} — {}", cycle_num, timestamp);
     eprintln!("{}", "=".repeat(60));
@@ -644,7 +645,7 @@ fn run_cycle(
 
             match &action.kind {
                 ActionKind::WriteNode { key, covers, .. } => {
-                    let conf_val = action.confidence.value();
+                    let conf_val = action.confidence.gate_value();
                     let req = required_confidence(depth, config.confidence_base);
 
                     let source_uses: Vec<u32> = covers.iter()