doc(server): sync server-core with master

[bitflicker64]

Syncs the server-core docs (en and cn) against apache/hugegraph master at 36811483a (1.7.0).
Every default and allowed value below was read from the Options class or the conf template the
server actually reads, not from the previous doc text.

page	what was wrong	what changed	source (file:line on master)
config/config-option.md	store.schema, store.system, raft.endpoint, raft.use_snapshot documented as graph options, but no such keys exist	removed the four rows	hugegraph-server/hugegraph-core/.../config/CoreOptions.java (no such options; absent from the whole tree)
config/config-option.md	raft.group_peers listed under the graph properties file	moved to the Rest Server table with its real default 127.0.0.1:8090	hugegraph-server/hugegraph-api/.../config/ServerOptions.java:585
config/config-option.md	raft.path default ./raft-log	./raftlog	CoreOptions.java:108
config/config-option.md	raft.rpc_timeout default 60000 and no unit	60, described as seconds	CoreOptions.java:229
config/config-option.md	raft.rpc_threads default 80	max(CPUs * 2, 80)	CoreOptions.java:213
config/config-option.md	oltp.concurrent_threads default 10	max(10, CPUs / 2)	CoreOptions.java:403
config/config-option.md	computer.config default /conf/computer.yaml	./conf/computer.yaml	CoreOptions.java:630
config/config-option.md	store described as "the database name like Cassandra Keyspace"	"The backend database namespace."	CoreOptions.java:64
config/config-option.md	backend default rocksdb, serializer default binary and its allowed values listed cassandra/mysql	option defaults memory and text, with a note that the shipped graph templates set rocksdb/hstore and binary; serializer values are text/binary/binaryscatter plus backend-registered ones	CoreOptions.java:49,78, backend/serializer/SerializerFactory.java, hugegraph-dist/src/assembly/static/conf/graphs/hugegraph.properties:22-27
config/config-option.md	search.text_analyzer and _mode listed a word analyzer and its modes	removed; the seven analyzers on master are ansj, hanlp, smartcn, jieba, jcseg, mmseg4j, ikanalyzer	analyzer/AnalyzerFactory.java:36-53, CoreOptions.java:603,613
config/config-option.md	26 CoreOptions keys undocumented	added serializer.buffer_max_capacity, schema.init_template, schema.index_rebuild_using_pushdown, query.trust_index, query.max_indexes_available, query.dedup_option, oltp.query_batch_size, oltp.query_batch_avg_degree_ratio, oltp.query_batch_expect_degree, task.schedule_period, task.retry, k8s.operator_template, k8s.quota_template, pd.peers, graphspace, alias.graph.id, graph.read_mode, the four memory.* keys and the five missing raft.snapshot*/raft.install_snapshot_rpc_timeout keys	CoreOptions.java:85,701,534,56,709,717,429,437,446,281,326,637,644,650,681,688,694,656-674,139-160,237
config/config-option.md	the raft options were presented as current	grouped into a collapsed block noting the shipped templates mark them deprecated	conf/graphs/hugegraph.properties:59-61
config/config-option.md	server.id described as "used for license verification"	"The optional legacy id of hugegraph-server."	ServerOptions.java (SERVER_ID)
config/config-option.md	gremlinserver.max_route default 8	2 * CPUs	ServerOptions.java (GREMLIN_SERVER_MAX_ROUTE)
config/config-option.md	auth.cache_expire described as "expiration time of vertex cache"	"The expiration time in seconds of auth cache in auth client and auth server."	hugegraph-server/hugegraph-core/.../config/AuthOptions.java (AUTH_CACHE_EXPIRE)
config/config-option.md	12 rest-server keys undocumented	added graphs.enable_dynamic_create_drop, init_store.enabled, server.role_election, server.node_id, server.node_role, server.graphspace, server.service_id, server.path_graphspace, server.start_ignore_single_graph_error, server.event_hub_threads, restserver.task_threads, white_ip.status	ServerOptions.java
config/config-option.md	RoleElectionOptions was not documented at all	added a collapsed block with the six server.role.* keys	hugegraph-server/hugegraph-core/.../masterelection/RoleElectionOptions.java
config/config-option.md	PD/Meta section had only three keys	added cluster, metrics.data_to_pd, meta.use_ca, meta.ca, meta.client_ca, meta.client_key, plus hstore.partition_count and hstore.shard_count from the graph file	ServerOptions.java, hugegraph-server/hugegraph-hstore/.../HstoreOptions.java:27-38
config/config-option.md	meta.endpoints was listed with default http://127.0.0.1:2379 and a description implying it configures the metadata connection	marked as declared but not read by any code, and pointed at pd.peers, which the meta connection is actually built from	hugegraph-server/hugegraph-api/.../config/ServerOptions.java:139-144 (declared; the only hit for META_ENDPOINTS or meta.endpoints in the tree), hugegraph-server/hugegraph-api/.../core/GraphManager.java:527-541 (initMetaManager reads PD_PEERS)
config/config-option.md	K8s block had three keys	expanded to the full k8s/PD-service set from ServerOptions	ServerOptions.java
config/config-option.md	rocksdb.cache_index_and_filter_blocks, rocksdb.pin_l0_filter_and_index_blocks_in_cache, rocksdb.optimize_filters_for_hits documented as false	all three are true	hugegraph-server/hugegraph-rocksdb/.../RocksDBOptions.java:614,623,662
config/config-option.md	compression defaults given as Java enum names (SNAPPY_COMPRESSION, NO_COMPRESSION)	the config values the server accepts: snappy, none, [none, none, snappy, snappy, snappy, snappy, snappy]	RocksDBOptions.java:141,151,161
config/config-option.md	rocksdb.option_path and rocksdb.open_http documented (ToplingDB)	removed; neither key exists in RocksDBOptions or anywhere else in the tree at this commit	RocksDBOptions.java
config/config-option.md	23 RocksDBOptions keys undocumented	added the block/table, memtable, sync and filter-partitioning options (rocksdb.block_size, index_type, format_version, bytes_per_sync, row_cache_capacity, memtable_*, partition_filters_and_indexes, prefix_extractor_n_bytes, and the rest)	RocksDBOptions.java
config/config-option.md	hbase.krb5_conf default etc/krb5.conf, hbase.truncate_timeout missing	/etc/krb5.conf, added hbase.truncate_timeout=30	hugegraph-server/hugegraph-hbase/.../HbaseOptions.java
config/config-option.md (cn only)	the Arthas block was duplicated, the HBase block was nested inside it so it never rendered as its own section, and the first Arthas block was missing arthas.disabledCommands	de-duplicated, un-nested, row added	ServerOptions.java (ARTHAS_DISABLED_COMMANDS)
config/config-option.md	RPC block existed only on the cn page and was missing rpc.serialization	added the block to the en page and rpc.serialization=hessian2 to both	hugegraph-commons/hugegraph-rpc/.../config/RpcOptions.java
config/config-option.md	Gremlin Server section listed six keys	added maxContentLength, maxChunkSize, maxHeaderSize, resultIterationBatchSize, ssl.enabled	hugegraph-dist/src/assembly/static/conf/gremlin-server.yaml:117-127
guides/custom-plugin.md	RocksDBStoreProvider sample used newSchemaStore(String), newGraphStore(String) and version() returning 1.0	signatures now take HugeConfig, newSystemStore added, driverVersion() returns 1.11	hugegraph-rocksdb/.../RocksDBStoreProvider.java
guides/custom-plugin.md	BackendStore listing was missing nine methods and had clear() instead of clear(boolean)	listing rebuilt from the interface	hugegraph-core/.../backend/store/BackendStore.java
guides/custom-plugin.md	GraphSerializer listing was missing writeOlapVertex and readEdges	added; public modifiers dropped to match the interfaces	hugegraph-core/.../backend/serializer/GraphSerializer.java
guides/custom-plugin.md	RocksDBOptions sample had rocksdb-data paths and the old graph/* data_disks keys	rocksdb-data/data, rocksdb-data/wal and the current g/* key list	RocksDBOptions.java (DATA_PATH, WAL_PATH, DATA_DISKS)
guides/custom-plugin.md	DemoPlugin sample omitted supportsMinVersion/supportsMaxVersion, which the loader requires	both methods added to the sample	hugegraph-dist/.../dist/RegisterUtil.java (registerPlugins)
guides/custom-plugin.md	"8 built-in Chinese word breakers"	7, named	analyzer/AnalyzerFactory.java:36-53
guides/faq.md	error text and limits: Id max length is 128, edge id 32768, index id 128	The max length of vertex id is 16384 / edge id is 65536; index ids over 32 bytes are hashed	backend/serializer/BytesBuffer.java:63-64,76, structure/HugeVertex.java:186-195, structure/HugeEdge.java:158-163
guides/faq.md	"An EdgeLabel does not support connecting multiple pairs of VertexLabels"	it does: link() accumulates pairs; sourceLabel()/targetLabel() are deprecated single-pair methods	schema/builder/EdgeLabelBuilder.java:411-418, schema/EdgeLabel.java:203-212,254-257
guides/faq.md	the graph clear answer did not give the confirmation string	added ?confirm_message=I'm sure to delete all data	hugegraph-api/.../api/profile/GraphsAPI.java:79,589-603
guides/desgin-concept.md	"supports three ID strategies" while listing four, and CUSTOMIZE_UUID was absent	four strategies, CUSTOMIZE_UUID and a useCustomizeUuidId() example added	type/define/IdStrategy.java, schema/VertexLabel.java:122, schema/builder/VertexLabelBuilder.java:323
guides/desgin-concept.md (en)	the self-loop paragraph had lost its comparison clause, the sortKey bullets were garbled, the TinkerPop link was pasted twice, and one heading was a duplicate of the previous one	restored from the cn text, headings and link fixed	mirrors content/cn/docs/guides/desgin-concept.md
guides/desgin-concept.md	atomicity example cited Cassandra, which 1.7.0 no longer supports	RocksDB only	backend/store/BackendProviderFactory.java:44-45 (ALLOWED_BACKENDS)
language/hugegraph-gremlin.md	Vertex features UserSuppliedIds, StringIds, CustomIds, MultiProperties, DuplicateMultiProperties shown as false	all five are true	structure/HugeFeatures.java:116,136,240,250,256
language/hugegraph-gremlin.md	Edge features StringIds and CustomIds shown as false; UniformListValues shown as false	all true	structure/HugeFeatures.java:116,136,349-356
language/hugegraph-gremlin.md	four step links pointed at the wrong anchor (#add-step for and, #addedge-step for count and path) and two URLs had stray dots (apac.he.org, docs/c.urrent)	anchors and URLs corrected; the V row is now labelled "vertex steps"	tinkerpop reference anchors
language/hugegraph-example.md	the relationship table listed five edges while the text and the schema below it use six	battled row added with its time property	the page's own 2.1 Graph Schema block
language/hugegraph-example.md	"each edge label can only act on one pair of source and target vertex labels"	corrected the same way as the FAQ entry	schema/builder/EdgeLabelBuilder.java:411-418
language/hugegraph-example.md	the "pluto is not his own cohabitant" snippet had unbalanced parentheses	where(is(neq(pluto))).values('name')	Gremlin syntax

Verified with no change needed: guides/architectural.md (backend list already matches ALLOWED_BACKENDS, all internal links resolve) and the six frozen benchmark reports under performance/ (all images and links resolve; numbers untouched).