fix(telemetry): fix CI failures in phase-6 build, clang-tidy, and rename checks

Build fixes in PeerImp.cpp:
- Rename duplicate `span` variable to `consSpan` in proposal and
  validation handlers to avoid redefinition error
- Fix `->` on non-pointer SpanGuard (now correctly on shared_ptr)
- Fix move-only type copy in lambda capture

Clang-tidy fixes:
- Concatenate nested namespaces in LedgerSpanNames.h and PeerSpanNames.h
- Add missing SpanNames.h includes in BuildLedger.cpp, LedgerMaster.cpp,
  PeerImp.cpp for direct seg:: symbol usage
- Add missing <chrono> and <cstdint> includes in BuildLedger.cpp
- Remove unused Feature.h include from BuildLedger.cpp

Rename check fix:
- Run docs.sh to rename rippled_ metric prefixes to xrpld_ in
  09-data-collection-reference.md and telemetry-runbook.md

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

src/xrpld/app/ledger/detail/BuildLedger.cpp

@@ -14,13 +14,15 @@
 #include <xrpl/ledger/Ledger.h>
 #include <xrpl/ledger/OpenView.h>
 #include <xrpl/nodestore/NodeObject.h>
-#include <xrpl/protocol/Feature.h>
 #include <xrpl/protocol/LedgerHeader.h>
 #include <xrpl/protocol/Protocol.h>
 #include <xrpl/telemetry/SpanGuard.h>
+#include <xrpl/telemetry/SpanNames.h>
 #include <xrpl/tx/apply.h>
 
+#include <chrono>
 #include <cstddef>
+#include <cstdint>
 #include <exception>
 #include <memory>
 #include <set>

src/xrpld/app/ledger/detail/LedgerMaster.cpp

@@ -57,6 +57,7 @@
 #include <xrpl/shamap/SHAMapMissingNode.h>
 #include <xrpl/shamap/SHAMapTreeNode.h>
 #include <xrpl/telemetry/SpanGuard.h>
+#include <xrpl/telemetry/SpanNames.h>
 
 #include <boost/icl/concept/interval_set.hpp>
 

src/xrpld/app/ledger/detail/LedgerSpanNames.h

@@ -15,9 +15,7 @@
 
 #include <xrpl/telemetry/SpanNames.h>
 
-namespace xrpl {
-namespace telemetry {
-namespace ledger_span {
+namespace xrpl::telemetry::ledger_span {
 
 // ===== Span operation suffixes ===============================================
 
@@ -49,6 +47,4 @@ inline constexpr auto txFailed = join(xrplLedger, makeStr("tx_failed"));
 inline constexpr auto validations = join(xrplLedger, makeStr("validations"));
 }  // namespace attr
 
-}  // namespace ledger_span
-}  // namespace telemetry
-}  // namespace xrpl
+}  // namespace xrpl::telemetry::ledger_span

src/xrpld/overlay/detail/PeerImp.cpp

@@ -68,6 +68,7 @@
 #include <xrpl/server/NetworkOPs.h>
 #include <xrpl/shamap/SHAMapNodeID.h>
 #include <xrpl/telemetry/SpanGuard.h>
+#include <xrpl/telemetry/SpanNames.h>
 #include <xrpl/tx/apply.h>
 
 #include <boost/algorithm/string/predicate.hpp>
@@ -1966,17 +1967,16 @@ PeerImp::onMessage(std::shared_ptr<protocol::TMProposeSet> const& m)
             app_.getTimeKeeper().closeTime(),
             calcNodeID(app_.getValidatorManifests().getMasterKey(publicKey))});
 
-    // Create a receive span that links to the sender's trace context
-    // (if propagated). shared_ptr keeps it alive across the job boundary.
-    auto span = std::make_shared<telemetry::SpanGuard>(telemetry::proposalReceiveSpan(set));
-    span->setAttribute(telemetry::cons_span::attr::trusted, isTrusted);
-    span->setAttribute(telemetry::cons_span::attr::round, static_cast<int64_t>(set.proposeseq()));
+    auto consSpan = std::make_shared<telemetry::SpanGuard>(telemetry::proposalReceiveSpan(set));
+    consSpan->setAttribute(telemetry::cons_span::attr::trusted, isTrusted);
+    consSpan->setAttribute(
+        telemetry::cons_span::attr::round, static_cast<int64_t>(set.proposeseq()));
 
     std::weak_ptr<PeerImp> const weak = shared_from_this();
     app_.getJobQueue().addJob(
         isTrusted ? jtPROPOSAL_t : jtPROPOSAL_ut,
         "checkPropose",
-        [weak, isTrusted, m, proposal, sp = std::move(span)]() {
+        [weak, isTrusted, m, proposal, sp = std::move(consSpan)]() {
             if (auto peer = weak.lock())
                 peer->checkPropose(isTrusted, m, proposal);
         });
@@ -2560,13 +2560,12 @@ PeerImp::onMessage(std::shared_ptr<protocol::TMValidation> const& m)
             return;
         }
 
-        // Create a receive span that links to the sender's trace context
-        // (if propagated). shared_ptr keeps it alive across the job boundary.
-        auto span = std::make_shared<telemetry::SpanGuard>(telemetry::validationReceiveSpan(*m));
-        span->setAttribute(telemetry::cons_span::attr::trusted, isTrusted);
+        auto consSpan =
+            std::make_shared<telemetry::SpanGuard>(telemetry::validationReceiveSpan(*m));
+        consSpan->setAttribute(telemetry::cons_span::attr::trusted, isTrusted);
         if (val->isFieldPresent(sfLedgerSequence))
         {
-            span->setAttribute(
+            consSpan->setAttribute(
                 telemetry::cons_span::attr::ledgerSeq,
                 static_cast<int64_t>(val->getFieldU32(sfLedgerSequence)));
         }
@@ -2583,7 +2582,7 @@ PeerImp::onMessage(std::shared_ptr<protocol::TMValidation> const& m)
             app_.getJobQueue().addJob(
                 isTrusted ? jtVALIDATION_t : jtVALIDATION_ut,
                 name,
-                [weak, val, m, key, sp = std::move(span)]() {
+                [weak, val, m, key, sp = std::move(consSpan)]() {
                     if (auto peer = weak.lock())
                         peer->checkValidation(val, key, m);
                 });

src/xrpld/overlay/detail/PeerSpanNames.h

@@ -13,9 +13,7 @@
 
 #include <xrpl/telemetry/SpanNames.h>
 
-namespace xrpl {
-namespace telemetry {
-namespace peer_span {
+namespace xrpl::telemetry::peer_span {
 
 // ===== Span operation suffixes ===============================================
 
@@ -45,6 +43,4 @@ inline constexpr auto validationTrusted =
     join(join(xrplPeer, makeStr("validation")), makeStr("trusted"));
 }  // namespace attr
 
-}  // namespace peer_span
-}  // namespace telemetry
-}  // namespace xrpl
+}  // namespace xrpl::telemetry::peer_span